RBob

iTrader: (1)

Read the comments:

The coolant threshold at LD257 just defines which TPS% vs RPM table for PE to use. If the coolant is above or equal to 120* C, then the table at LD3C5 is used. Under 120*C and the table at LD3B2 is used.

RBob.

weaz4200

iTrader: (2)

So then my initial assumption that my "low coolant" table, is the one which I'd have to address my TPS% in order to stay out of PE is correct. For quite sometime I wasn't sure and started questioning whether the TPS% to stay out of PE was a "SCALAR" or a "TABLE".


I assume the 8746 was used in multiple vehicles other than 3rd gens... Do any of them actually implement the use of the 120* (high Coolant) table? Just out of curiosity.


I hate my brain, always over-analyzing and dense to the simple things.

Thanks Rbob.
Your a life saver.

weaz4200

iTrader: (2)

Okay, so now that the VE table are ready to get tested out anything else I should consider looking at before I test out the tune? TPS% for PE mode alright? Should I raise the TPS% at all? Leave IAC steps where they are or lower to have less steps? BPW, leave as is or change? ETC....

1 quick question - So What are the stock injectors rated at... I've seen anywhere from 40 LBS/HR - 55 LBS/HR... On average sites stated 40lbs... Just curious cause in order to get 134 (from BPW - injector constant) running the formula it uses "54" to get to 134.

So anything else or just burn the tune, log it and see whats goin on first?


Burn chip with these values correct?

Thanks,
ROB

weaz4200

iTrader: (2)

Anyways, Chip is burnt and verified fine... Will be plugging in modded ECM and running the tune tomorrow.

On a side note. Few quick questions as I obviously need to look into a few items once I start to dive deeper into tuning. Just trying to get a list going to figure out how much $$$ I'll need.
-------------------------

Fuel Pump - Obviously going to have to upgrade over the stock TBI pump... So go with the 350 TPI EP-242 pump or throw in a WALBRO GCA758-2 255 LPH pump and call it a day? (http://www.summitracing.com/parts/vp...t/model/camaro)

--------------------------

FPR - Looking for suggestions. Which should I consider? I've been looking at these 2 but not sure what PRESSURE RANGE to go with...

1) Mallory 4307M (4-25 PSI) - http://www.summitracing.com/parts/maa-4307m/overview/

2) Accel 74567 - (30-100 PSI) - http://www.summitracing.com/parts/acc-74567/overview/

Mallory is only rated to 25, but then the Accel starts at 30.

I welcome suggestions on any other possible regulators to look into if there are better options.

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Injectors - GM 1708430 (80 LB/HR) or GM 5235231 (90 LB/HR)? Plus what sites are good sources to find the injectors at reasonable prices?

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Last but not least....

Wide Band for datalogging. Not necessarily trying to skimp out here so....

1) MTX-L - http://www.innovatemotorsports.com/x...8&cat=0&page=1

or

2) G3 Gauge / LC-2 Kit - http://www.innovatemotorsports.com/x...cat=273&page=2

or

suggestions welcome here to.

Thanks,
ROB

dimented24x7

iTrader: (2)

For the pump use the Walbro 190 LPH or the TPI pump. The 255 will be too much and cause pressure regulation issues with TBI.

For the fuel pressure regulator, you will need to make a block-off plate for the TBI if you want to use an external regulator. The plate needs to have a passage in it that directs teh fuel straight through the regulator in the pod. Then you want to put your two port regulator in the return line coming from the TBI, and this will regulate your fuel pressure.

Other option is to just use the stock regulator, and get a better spring. I think there was a user on here who was still carrying parts for the regulators not too long ago (doctrumpet, I think).

A last option is to get a regulator off of a 93-95 BBC. Some of them had high performance regulators with oversize passages and high pressure (25-30 PSI) regulators.

dimented24x7

iTrader: (2)

Id get the gauge and LC-2 kit, or get the LM-2 kit. Both will let you actually datalog the stream if your car's computer is set up for a wideband input (eg 95 TBI PCM with WB patch or RBobs dynamic EFI).

weaz4200

iTrader: (2)

Alright, cool.

I'm having a hard time picturing it but I'll figure it out if I go that route... I'll do a search here on TGO as I'm willing to bet its been done before.

Sounds like the last 2 options are less of a hassle than an external regulator... I'll most likely end up choosing one of them (We'll see how it pans out). THANKS.

I see. My computer is not setup for the wideband yet as I have not quite dove that deep into all this yet. I'm just starting to mess with the VE tables/BLM's. I will search for this WB patch and see what I need to do.
Thanks.

Update: G2 adapter install worked out (no ECM issues when installed) and was able to burn my FIRST chip as well! WOOT. lol. Went for a ride to get a datalog. Tried to get a log with Tunerpro but the BLM table at first was staying at 128 most of the time (Closed loop). Not sure what happened but eventually BLM's started to change like normal even though was in closed loop before. Well I wasnt sure if there was a problem or not and I didn't wanna go for a ride and not get a log so I opted to not datalog with Tunerpro but used WINALDL instead. So here's what I got.

Not sure exactly where my focus should be when looking at the Sensor data but from the looks of it I'd be willing to guess my IAC numbers seem high at certain points in the log. Aside from BLM data where should my focus be?

Also included a BLM log. #'s Don't seem too bad. We'll see how the table changes with the new data.

weaz4200

iTrader: (2)

Pic of BLM changes before and after... Looks ugly.

weaz4200

iTrader: (2)

Now I'm just getting pissed. Correct me if I'm wrong but if you raise the value in the VE table up that should add more fuel correct? So how is it doing the opposite?

Example...

Ran my MOD2 tune - Datalogged BLM's and applied to MOD3 tune. Here's what I got. When logging MOD2 the BLM at 800 @ 40 was 117.2 (.88) so I applied the changes necessary. Original value at 800 @ 40 was 50.78.

Calculations are as follows - 50.78 (VE1) + 19.92 (VE2) = 70.7 * .88 (wide Correction 10) = 62.216 - 19.92 = 42.296. Changed value and saved in MOD3 tune. Actually it corrected to 42.19. In the MOD3 tune I ran today the BLM logged 127.1 800 @ 40. So went from 117.2 to 127.1. Seems good to me.

BUT...

Now BLM at 1200 @ 60 was 129.2. VE table was 62.89. So runing the equation to correct.

62.89 (VE1) + 19.92 (VE2) = 82.81 * 1.022 (wide Correction 10) = 84.63 - 19.92 = 64.71. (Tunerpro changed to 64.84).

So I'm lost.

So 800 @ 40 WAS 50.78 VE1 (117.2 BLM) and after change to 42.19 (127.1) Lowered percentage, less fuel and BLM went up as it should towards lean.

While 1200 @ 60 WAS 62.89 VE1 (129.2 BLM) and after change to 64.84 (135.3) BLM jumped up LEANER when I added to VE to lower down from 129.2?

Whats up with that?

weaz4200

iTrader: (2)

Guess I'll just keep compiling on info....

Same thing going on as in my previous post just looking better on paper.
So I'm on Mod 5 tune. Went through and used MOd 2,3 and 4 BLM logs to make the 5th tune as I tried to pick numbers closest to 128 from each log. On today's run NO numbers above 128, mostly 120-126. Here's the thing... When looking at my VE table and the BLM logs I reference which VE % was used from each tune and compare the BLM from the previous logs to newest log since its a Hybrid mix of all logs...

Basically, Lets say... Main VE table 1200 @ 70... % is 64.84.

When I initially ran MOD2 tune the BLM logged at 133. So I used the same value of 64.84 in my MOD 5 tune VE table and I logged 124.1. That's a big sweep. How are you supposed to mod the VE table/s to within +/- 4 or 5 if every time you log the BLM # isn't even close???

Anyways, if anyone is interested in looking at the logs have at it. Have 2 sensor/data logs as the first log was cut short since the BLM's weren't registering. So I restarted the program and BLMs started to LOG but I forgot to LOG the sensor data initially on restart. Either way, decided to hit the highway for the first time and some of that data is on MOD 5 1 LOG.

ROB

weaz4200

iTrader: (2)

Been a while since I checked in here. Guess no interest since I've been gone. Whatever. I'll ask my questions anyways. So I picked up the Innovate LC-2 with G3 gauge. Any suggestions on how I should go about installing it? Remove the stock O2 and run the wideband in it's place? Leave the stock O2 and weld on the included bung that came in the kit? How to get this thing installed to monitor with Tunerpro? Etc.

Ronny

iTrader: (1)

I believe you can use the Innovate WB as a substitute to NB. The set up instructions are included in Innovate instructions. Or you can add the WB A/F as a report in TP datalogs. I have not done either but I suspect a search will bring more info to you. TP site may have info. I use EBL-WU for datalogging and it has a specific output to show the A/F from WB so in that respect it differs from what you may end up doing. Likewise EBL allows WB in place of NB sensor for A/F feedback while in OL.

weaz4200

iTrader: (2)

I've searched a bit and cant find an answer. I need to find the WB02 hack for the 8746 and the ECM pinout so I know where to wire in the O2.