First data run, take a look? - Third Generation F-Body Message Boards

Go Back  Third Generation F-Body Message Boards > Tech Boards > DIY PROM
Reload this Page >

First data run, take a look?

DIY PROM Do It Yourself PROM chip burning help. No PROM begging. No PROMs for sale. No commercial exchange. Not a referral service.

First data run, take a look?

Old 05-04-2018, 05:33 PM
  #1  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
First data run, take a look?

Car is running rough, engine is shaking even at idle and im getting a gas smell which will probably be obvious for you experienced guys when looking at the data, and the DA connecting kept toggling green/red. Other than that this is my first log ever and am hopeful that someone will take a look and let me know what they think, whether it was a proper test log or if I should switch my files up or what not. Its hard to be certain which adx file will work for what is probably a mostly stock tune on the ecm.

This run is with the everything stock hooked up (minus t56 swap items), egr solenoid line to egr has been plugged (i had a engine stumble just off idle), and using existing chip/tune which was set somewhere around 2008 (pre t56 swap) via Wong's Performance Engineering in Vancouver, WA. I had my autoprom in passthrough mode with the Super_8dm2.ecm imported as the xdf file and 8D_90-91_Corvette.adx loaded (both from tunerpro website).

The first rpm spike was a rolling start then floored, with a quick shift into 2nd and floored for just a moment. 2nd rpm spike i think was simply first gear but held a little longer, then towards the end i did a 2-3k rpm hold for a few moments.

So yeah, i'm basically looking for feedback on proper logging methods and tips for what to keep my eye on while looking at the data.

Thanks,

Alan
Attached Files
File Type: zip
test1.zip (27.4 KB, 20 views)
alans91z is offline  
Old 05-04-2018, 05:46 PM
  #2  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

Yeah I can take a look a little later today. Do you have a WB on it?
ULTM8Z is offline  
Old 05-04-2018, 06:57 PM
  #3  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

Great thanks! Its a stock o2 sensor, havent converted yet. Wanted to get some data points and and identify issues before i started working on more conversions.
alans91z is offline  
Old 05-04-2018, 07:27 PM
  #4  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

Ok, here's what I'm seeing...

1.) You're spending the vast majority of the time in BLM cell 4 (the idle cell). Even when the car is not at idle speeds. Not sure what that's all about at this point.

2.) The BLMs are diving down to around 108-111 as soon as you get into closed loop, so the ECM is detecting a rich condition and attempting to compensate for it.

3.) Your coolant temperature doesn't get above 160F. What thermostat are you running?

4.) The ECM is also commanding a ~9.5:1 AFR when you go WOT. Granted we need to see what the actual AFR is with a WB, but that's freaking rich. My guess is the actual AFR is going to be way too rich as well.

Do you have the factory chip you can put in there? It's probably good to get a stock baseline to start with before evaluating "performance chips".

Also, what cam are you running?

Last edited by ULTM8Z; 05-04-2018 at 07:31 PM.
ULTM8Z is offline  
Old 05-04-2018, 08:39 PM
  #5  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

"You're spending the vast majority of the time in BLM cell 4 (the idle cell). Even when the car is not at idle speeds. Not sure what that's all about at this point."

"2.) The BLMs are diving down to around 108-111 as soon as you get into closed loop, so the ECM is detecting a rich condition and attempting to compensate for it."

i need to learn that acronym, dont know what it is

"3.) Your coolant temperature doesn't get above 160F. What thermostat are you running?"

Im guessing its a 170, i cant be sure since its been years since ive changed it

"4.) The ECM is also commanding a ~9.5:1 AFR when you go WOT. Granted we need to see what the actual AFR is with a WB, but that's freaking rich. My guess is the actual AFR is going to be way too rich as well."

Its always seemed to run too rich. I replaced all valve seals recently then I pulled the egr hose off to get rid of an off-idle stumble, ran great for a few days then started acting like its running on 7 cylinders. I definitely need to go back through the plug wires and such, hoping its not a failing injector

"Do you have the factory chip you can put in there? It's probably good to get a stock baseline to start with before evaluating "performance chips"."

ive never had a factory chip, bought the car with a jet chip then got it dyno'd it a few years later.

"Also, what cam are you running?"

The engine is a crate engine install prior to my ownership, the cam might be just a crate engine cam (i might be able to narrow it down to the exact crate engine when i get back to the house/paperwork). The engine appears all stock (intake,runners etc) except for the 1.6 gold roller rockers. I probably posted the crate engine ID here on the forums years back.
alans91z is offline  
Old 05-04-2018, 11:06 PM
  #6  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

Im home and have some time to type! First, thanks for getting back so soon on that log file. BTW i ran across your website whlie researching tunerpro, very impressed with your car and what you've done with it. I have a #'s '70 rs that will eventually return to daily driver status, but it won't be near as clean as what you've done with yours.

Back on topic, heres whats in the '91:
Engine: part#12513151 ENG-5.7GW (gm goodwrench?) w/~80k miles
Heads: #14101083 w/ 1.6 crane gold roller rockers
Intake: TPI stock setup
Cam: ?
Headers: Edelbrock 6876; 1-5/8" Dual cat

the crate engine # on the reciept lists a different head # that what is on my car, so who knows if they didn't stop there and threw in a completely different cam. Below is what is listed with that engine:

HYDRAULIC ROLLER CAMSHAFT
INTAKE LIFT-.359" * EXHAUST LIFT.384" *
INTAKE DURATION @.050-186.5 * EXHAUST DURATION @.050-193.8
LOBE CENTER SEPERATION -110.3
CAMSHAFT MECHANICAL SPECS:
INTAKE VALVE OPENS @ -16.9 BTDC * INTAKE VALVE CLOSES @ 23.4ATDC * INTAKE LOBE CENTERLINE - 110.3
EXHAUST VALVE OPENS @ 25.6BBDC * EXHAUST VALVE CLOSES @ -11.9 ATDC * EXHAUST LOBE CENTERLINE - 110.3

1986 AND UP 2 BOLT MAIN 1 PIECE CRANKSHAFT SEAL BLOCK( NO MECHANICAL FUEL PUMP PROVISION)
NODULAR IRON CRANKSHAFT
POWDERED METAL CONNECTING RODS
FLAT TOP HYPEREUTECTIC PISTONS
9.6:1 COMPRESSION RATIO
HIGH VOLUME OIL PUMP
SHORT WINDAGE TRAY
SINGLE ROLLER TIMING CHAIN

Last edited by alans91z; 05-04-2018 at 11:44 PM.
alans91z is offline  
Old 05-05-2018, 10:58 AM
  #7  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

Yeah, that's a very mild cam. No reason a factory AUJP chip wouldn't work on it. Assuming what you have is a Jet chip, more than likely it's mostly stock anyway. Though I will say that 9.6:1 compression seems awfully high for an iron headed engine (which I'm assuming it is). Not sure what the local octane rating is in your area, but we'd never get away with it here in Los Angeles with the lousy 91 octane we haev.

Any rate, the BLM reading below 128 (far below in your case) means that the ECM is detecting a overly rich condition and is pulling fuel out of the mixture.

Could be due to a number of things including (but not limited to)

fuel pressure too high and/or bad fuel pressure regulator
bad spark plug(s) or ignition wire(s)
bad ignition coil or distributor cap
leaking injector(s)
bad sensor(s)... although I wasn't getting an error code on any of them that would matter. Note that I did see an error on the vehicle speed sensor.

Any rate, you'll need to figure out the issue. One clue is that since the ECM is detecting it, all or at least part of the problem has to be on the same side of the engine as the O2 sensor. If it's a bad plug or wire, it would have to be on that side, since the ECM is "flying blind" on the other side without the O2 sensor.

Any rate, the data can't really tell us much more than that IMO...
ULTM8Z is offline  
Old 05-05-2018, 12:29 PM
  #8  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

Im assuming the VSS error is due to the Dakota Digital (sgi5?) unit that i put in. The ECM definitely isnt happy with it, but it would only throw an engine light when one of my connections gets loose (needle drops to 0, followed by CEL). But my speedo works normally otherwise, i set it by getting on the highway and adjusting till the odometer tripped 1 mile at the green mile signs consistently.

Engine-wise, everything you listed is new except the wires (i replaced the distributor due to bad pickup coil). I kicked the car over last night in the dark and didn't see any visible sparks coming from the plugs distributor etc. I think one of my wires might be damaged from touching the headers, thats next on my list to test.

"One clue is that since the ECM is detecting it, all or at least part of the problem has to be on the same side of the engine as the O2 sensor. If it's a bad plug or wire, it would have to be on that side, since the ECM is "flying blind" on the other side without the O2 sensor."

This struck me as brilliantly simple, wish i had thought of it first. Genius!

I looked up BLMs yesterday. If i understand this right, Block Learning Multipliers are used with INT(integrator) to make long and short term fuel adjustments (im guessing via injector pulse widths?) to keep the car running at an ideal air/fuel ratio using rpms plus manifold air pressure (for BLMs) or O2 sensor (for INT). Seems they set 128 as the target value, with a range of 105-150 (not sure on exact range in my ecm). BLMS are divided into cells each containing a range value, and within each of those BLM values is found yet another range of INT values. Am i on the right track? Talking technical is not my strong suit lol.

Anyways, as you said i need to get back to flushing out the issue. Its never ending with this car, or my other one, or that third and fourth one...

Thanks for your help, much appreciated!

-Alan
alans91z is offline  
Old 05-05-2018, 02:27 PM
  #9  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

Ultm8z did you use a log analyzer for that file or use tunerpro? I finally got an analyzer setup, the steep learning curve continues while getting all this stuff working right. Im using 84elkys v11u, and its got alot of info to look over in there lol

Last edited by alans91z; 05-05-2018 at 06:12 PM.
alans91z is offline  
Old 05-05-2018, 04:56 PM
  #10  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

Not really. I just watched the data on replay. Also exported to csv file to look at the error codes.
ULTM8Z is offline  
Old 05-12-2018, 09:09 PM
  #11  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

Ultm8z, i did another run after finding a bad exhaust gasket (on the drivers side) and swapping in new engine mounts, take a look if you get a chance thanks.

I had no idea what was waiting for me when i tackled those mounts, hoodog!! I put oem ones back in, but later on down the road if i get new headers/exhaust i'll look at getting solid mounts so i won't have to worry about engine sag again (though the new ones didn't seem to lift the engine up any).

I might still have an exhaust leak, but i couldn't find one in the header itself which is what i have been assuming for a while now. After new gaskets i still have a noise but i think its downstream of the header, maybe even at one of the catalytic converters.

Looking at the data it seems my BLMs are finally out of cell 4 but im not sure what to do with this data yet. Im going to go back to the stickies and see what i can make of this, and also look at getting a wideband setup.

Note, on tunerpro i could see afr at the dial screen but couldn't see it on the graphs, the only option is requested afr which never varied from 14.7 iirc. Im sure im just simply missing it.
Attached Files
alans91z is offline  
Old 05-13-2018, 01:05 PM
  #12  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

Here's your BLM history.

Your coolant temp seems to have been corrected. It's getting up to mid-190's now.

Still struggling with low BLM's though. Here's a screen shot of your BLM history. Note that you didn't hit a lot of the cells. I've also attached the SAUJP ADX file that I'm using to generate this history. Assuming you have no other malfunctions going on, then this is simply tuning related.

What I typically recommend is to drive around with the history view turned on so you can see all the cells you've hit or missed.

Unplug the ECM to reset everything. Then drive around for a while to get the relearn process well established. Then turn on the history view and start trying hit as many cells as you can. You can see the history table being updated in real time.

You can then use my EZ VE tool to (also attached here) to then dial in your VE table. People have reported to me that it only takes 1-3 iterations to get the table dialed in using (it took me two iterations).

The one thing that's off the wall is that your ECM is commanding mid-9's AFR. That's mind-bogglingly rich. Without a WB, it's impossible to say what your actual AFR is, but my guess is it's probably too rich as well. But if you want a dialed-in tune, you'll need to get the WB (and preferably hook it up to TunerproRT).

When tuning the VE, try to stay on the rich side of 128. What happens is that if you're BLM is on the lean side (>128) just prior to going into Power Enrich, the ECM will richen up the PE AFR proportionally to how far above 128 you were. That'll make your final commanded AFR richer than what you're programming in for it... i.e., you tell the ECM you want 12.5:1... but ECM sees you were at 134 BLM and decides to make it 12.5 x 134/128 = 12.0:1.

Go ahead and post your bin. I'm curious to see what Jet did with the PE AFR and why it's so programmed rich like that.

Edit... won't let me upload the adx file here. PM me your e-mail address.
Attached Thumbnails First data run, take a look?-blm-history.jpg  
Attached Files
File Type: xlsx
ULTM8Z's EZ-VE.xlsx (101.5 KB, 7 views)

Last edited by ULTM8Z; 05-13-2018 at 02:00 PM.
ULTM8Z is offline  
Old 05-13-2018, 09:17 PM
  #13  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

Ive attached Toms tune that i pulled from the car, i no longer have that jet chip.

Note that Toms tune is only good when looking at test1 (used autprom just to datalog). The test3 log was with bin 52030_D and S_AUJPv5 xdf (edited only for the manual transmission scalar and flag) with the matching narrowband adl file 2030_D5-NBo2 (all three files from the zipped file). No parameters were copied over from Toms tune, so unless i somehow fumbled up the files somewhere (or not using autprom correctly) then the test3 log should be completely unrelated to the Tom tune and i suspect its showing that there is an issue present with the car.

Correct me if im not referencing the files for you correctly, im still getting used to this stuff
Attached Files
File Type: bin
1991 z28 tune Tom Wong.bin (32.0 KB, 12 views)
alans91z is offline  
Old 05-13-2018, 09:20 PM
  #14  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

oh and thanks for the VE Tool/tips on logging data, i'll take a good run through the hills next time im ready and nail down those empty cells!
alans91z is offline  
Old 05-13-2018, 09:48 PM
  #15  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

Well, the commanded AFR in test3 seems to match Tom's tune.

Here's a screenshot from my Tunerpro replay. Commanded AFR at ~4400 rpm circled in red.

Note that the commanded AFR based on the values in the bin work out to 9.83:1 at 4400 rpm. But it's rich everywhere. Unless the car was tuned on dyno and it took that kind of commanded AFR to get the actual AFR you'd want (roughly around 12.75:1), then these PE values are ridiculous IMO. It has to be belching black smoke out the tail pipe like crazy when you're WOT.

But even if that was the case that it was tuned on dyno with a WB O2 hooked up... if you had to command 9.83 to get 12.75 at the WB O2 sensor, it would indicate there's something wrong with the fueling system or the injector parameters or something else.

For comparison you can also see what GM did with the factory AUJP PE AFR's. They're too rich as well IMO...
Attached Thumbnails First data run, take a look?-commanded-afr.jpg   First data run, take a look?-commanded-afr_2.jpg   First data run, take a look?-commanded-afr-aujp.jpg  
ULTM8Z is offline  
Old 05-13-2018, 11:41 PM
  #16  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

Iirc tom said he set afrs somewhere in the 11s (lower than he liked but still ok in the realm of gm) to avoid detonation. He used a chassis dyno, and im pretty sure a wbo2.

Whats got me is how i can load what should be a completely different tune and still get similar results. Ill burn a chip to make sure i didnt somehow have the same tune in the autoprom and run it in passthrough mode for data only
alans91z is offline  
Old 05-14-2018, 03:30 AM
  #17  
Junior Member
 
Join Date: Jun 2008
Posts: 4
Re: First data run, take a look?


ULTM8Z, what kind of NB o2 mv readings are you usually seeing in your own datalogs during WOT runs? Looking at Alan's datalog, it looks like he running bit lean (around 850 mV) during WOT? I would shoot little bit richer (higher) with NB o2 sensor readings, if WB isn't available.
Paccanini is offline  
Old 05-14-2018, 07:40 AM
  #18  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

I don't put a lot of stock in what a NB says, much less tune around it. After all, what does 850 mV correspond to? 12:1? 11:1? It's a meaningless reading in that regard.

really need to get a WB if you want to start knowing what WOT AFRs you're getting.
ULTM8Z is offline  
Old 05-14-2018, 09:42 AM
  #19  
Junior Member
 
Join Date: Jun 2008
Posts: 4
Re: First data run, take a look?

Originally Posted by ULTM8Z View Post
I don't put a lot of stock in what a NB says, much less tune around it. After all, what does 850 mV correspond to? 12:1? 11:1? It's a meaningless reading in that regard.

really need to get a WB if you want to start knowing what WOT AFRs you're getting.
I absolutely agree with you that WB is your best friend while tuning. I'm still curious to hear what kind of NB o2 readings you (or someone else) are getting during WOT? My NB (located in driver side collector) is showing constantly 880-900 mV during WOT while WB (passenger side collector) AFR is 12.5-12.8. It would be interesting to compare the readings with someone else.
Paccanini is offline  
Old 05-14-2018, 09:50 AM
  #20  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

I can take a look.
ULTM8Z is offline  
Old 05-14-2018, 03:59 PM
  #21  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

Just ordered a wbo2 kit, Innovative LC-2 (INN-3877). Wiring it in will be my next weekend project (once it shows up)
alans91z is offline  
Old 05-16-2018, 08:59 AM
  #22  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

Note the adx file i sent you is for a AEM WB. You'll have to get the one for your particular WB or re-set the one I sent you.
ULTM8Z is offline  
Old 05-17-2018, 01:24 PM
  #23  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

LC2 showed up yesterday, that was alot faster than i expected through summit. When hooking this up, can i just pull out the nbo2 and swap in the wbo2? The wiring would have to be set up properly of course, but I would like to avoid the downtime of installing a new bung in the exhaust.
alans91z is offline  
Old 05-17-2018, 09:10 PM
  #24  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

No unfortunately it doesn't work that way.

The ECM can't use a WB input.

It's a little involved, but it's not that bad...

https://www.thirdgen.org/forums/diy-...-run-take.html

Basically you need to hook up the WB signal wire to pin F14 on the ECM connector. Then wire the power and ground wires per the instructions for the particular WB.

In TP, you have uncheck the box for Opt2 b7.

You also have to check the box for Opt1 b5 for the LC-1 WB (make sure all other WB option boxes are unchecked).
ULTM8Z is offline  
Old 01-12-2019, 06:22 PM
  #25  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

Raising this post back from the dead, ive updated the engine with new manifold gaskets, egr valve and plug wires and then i took the car to DEQ to see how bad it would fail, but it ended up passing with flying colors! Didn't expect it, but i'll take it lol. A new bung is in the exhaust for the wideband but i haven't wired that in yet to the ecm and will have to tackle that another time. Today was spent just trying to brush up on Tunerpro basics (ive forgotten alot!) and get some more data.

This is where i'm probably getting off on the wrong foot, i may be trying to use the wrong files now that its been 7 months and i've forgetten where i was at. I wanted to run Tunerpro as an emulator and datalog, so started off loading up the following files to the program:
ADX- S_AUJP_v5_2030_D_NBo2
XDF-Super_8dm2
BIN- 52030_D_t56_egr
The bin was a file i edited last year for manual transmission and edited egr values to try to disable its function. I now went back in to restore EGR function but after surfing the forums and google i couldn't find the original values. So i peaked at the original file and edited as follows and renamed the file to reflect egr function:
EGR Diagnostic Min. Vehicle Speed=0
EGR Enable Min MAT Temp=-40
EGR % TPS Disable Threshold=0
EGR % TPS Enable Threshold=99.61 <-This value caught me by surprise when i went back in after the datalog to record the value, i thought i entered something just off idle. Wouldn't guess the software would update this number but maybe the value i enter was converted once i saved it? I'm guessing this value should be somewhere 1-10% so that it is working between idle and full throttle.

So now I've got a 25 minute log and noticed a few favorable changes from last year, namely the AFR no longer drops to the 9's and the BLMs seem to be going back to 128 more often though it does drop down low during certain stretches. Also, i get a Check Engine Light value 23 "MAT Sensor Low", i'll have to open up the hood and see if i somehow disconnected the temp sensor. Hopefully I am finally getting somewhere with this!
alans91z is offline  
Old 01-12-2019, 06:25 PM
  #26  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

That check engine light didn't turn on till 10 minutes in, maybe its not simply disconnected but goes bad after heating up?
alans91z is offline  
Old 01-12-2019, 07:26 PM
  #27  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

yup, disconnected. Check that off the list!
alans91z is offline  
Old 01-12-2019, 09:52 PM
  #28  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

After connecting the MAT sensor I adjusted the EGR TPS % Enable= 5% and burned a chip. Drove around watching the egr % duty cycle but never saw it read anything but 0.0%. I'm obviously off on how to set this guy. I'll attach the log since it has the MAT values.

Besides that, the car feels strong and is alot of fun. Maybe its just the exhaust note, but each time i get this thing rolling after a period of time im always impressed by how much it sets you back in the seat. Its not super quick by todays standards, best i've done is 14.1sec/99mph quarter mile and i probably haven't done anything to better that but its still alot of fun to drive.

Lastly, on this run, i haven't noticed this certain hot smell coming from the engine bay thats been typical for this car these last few years. Hope its gone for good, but im probably not that lucky.
alans91z is offline  
Old 01-13-2019, 09:09 PM
  #29  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

Looked at your latest log.... Your BLM history table is showing BLM's all over the place.

I haven't re-read through the entire thread, but I did look at the engine combo you posted. Remind me again why you're not just running a factory AUJP bin on this engine?


ULTM8Z is offline  
Old 01-13-2019, 09:34 PM
  #30  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

I think i went with S_AUJP because i was under the impression it was the most current version of AUJP. Part of my problem with this process is knowing what applies best for my car, which is compounded by having a mystery crate engine and converting to a manual transmission plus dealing with faulty engine parts. You think it would be better to just use an AUJP bin?
alans91z is offline  
Old 01-13-2019, 09:47 PM
  #31  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

SAUJP is kind of an improved version with features suited for tuners and a WB O2. functionally its "mostly" AUJP, but I'd still prefer to baseline you with a known quantity.

what's your current idle vacuum and at what rpm? if it's up around 19-20Hg, then it's likely very near a stock cam.
ULTM8Z is offline  
Old 01-13-2019, 09:47 PM
  #32  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

sorry, ignore my last post cause im all over the place here with these files.

What adx file should i be using to go with the AUJP bin? and for ADS/XDL files, that is just a logging file thingy correct?

Last edited by alans91z; 01-13-2019 at 09:49 PM. Reason: editing for correctness
alans91z is offline  
Old 01-13-2019, 09:56 PM
  #33  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

Looking at my last log, with the coolant temp at 207 degrees and MAT at 114 degrees, the car idles at ~700rpm and ~33kPA which converts to 9.7hg (inches of mercury=hg?)
alans91z is offline  
Old 01-13-2019, 10:04 PM
  #34  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

Looking at your data log, you're pulling about 20 inHg at idle. So yeah it's a pretty stock-like cam.

the 33 kpa is manifold pressure, not vacuum.

Last edited by ULTM8Z; 01-13-2019 at 10:16 PM.
ULTM8Z is offline  
Old 01-13-2019, 10:21 PM
  #35  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

It sounds lope-ish but not crazy, i'll try to post a vid if i can figure it out

Last edited by alans91z; 01-13-2019 at 10:41 PM. Reason: correctness
alans91z is offline  
Old 01-13-2019, 10:39 PM
  #36  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

tried to post a video but couldn't attach, even with it zipped /shrug
alans91z is offline  
Old 01-13-2019, 10:46 PM
  #37  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

Originally Posted by ULTM8Z View Post
Looking at your data log, you're pulling about 20 inHg at idle. So yeah it's a pretty stock-like cam.

the 33 kpa is manifold pressure, not vacuum.
Corrected, thanks! Just found the log vacuum button and i'm not feeling very sharp right now lol
alans91z is offline  
Old 01-13-2019, 11:03 PM
  #38  
Supreme Member
 
Join Date: Jan 2003
Posts: 2,644
Re: First data run, take a look?

your log files are fine for now. just try running AUJP bin so we can get a good baseline.

when you move to hook your WB up, you'll have to go to the SAUJP files (bin, add, xdf) in order to get the ECM to recognize it...
ULTM8Z is offline  
Old 01-13-2019, 11:17 PM
  #39  
Junior Member
Thread Starter
 
Join Date: Jul 2010
Location: Oregon
Posts: 70
Car: 1991 Z-28
Engine: Goodwrench 350, stock TPI
Transmission: T56
Axle/Gears: 3.73
Re: First data run, take a look?

will do, thank you for the help. I'll try to post another log tomorrow after work
alans91z is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Chevota
DIY PROM
7
05-13-2009 10:32 PM
Rage13
TPI
11
06-30-2003 01:06 AM
DANIELEK
DIY PROM
2
02-23-2002 01:40 PM
UnderDogRS
Organized Drag Racing and Autocross
10
11-10-2000 03:46 PM


Thread Tools
Search this Thread
Quick Reply: First data run, take a look?


Advertising
Featured Sponsors
Vendor Directory

Contact Us Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: