-92 Speed density 350 in my 71 Blazer
-730,8D,running Promintator loaded with S_AUJP_v2 and the Super_8dm2.ecu
-All readings and data logging done with TunerPro RT.

I've attached my data logging session and am stumped.
I've looked at the 3D graphed VE tables and it's just a bunch of spikes.

Take a look at the data log and see what you think.It's terrible!


EDIT...well I guess I can't attach a file.I guess I don't post enough
I can e-mail it if anyone is interested.

 

You got mail

 

Thanks for the Bin.
I'll go try it now.

My data log is >500kb and I'm not sure how to reduce it's size.

Also renameing...is it as simple as right clicking and hitting the rename tab?

Thanks again John

 

Aright I tried the S_AUJPv1 Bin

Still REALLY rich.

BLM-96
INT-118
PW-.36-.38
O2 sensor-700-800's but doea toggle between 200's to 800's

Here are the VE tables before upload and then downloaded from my prominator.
Pretty messed up!

S_AUJPv1 lower and upper tables before upload.




And then after being run for a while and downloaded from my Prominator to TunerPro R/T

 

WTF happened to your tables!

 

Check your cables that they are not getting interference from something. The table that came back is all boogered up.
Try the stock AUJP table by importing it, its smooth anyway so you can see if its coming back correctly.
Or this could be your definition file is corrupted or something.
maybe download it again to be sure its all ok.

That's got to be an addressing problem with the ecu file.
I don't see how anything else would do that.

 

I've downloaded the Def file from TunerPro's site a couple times,no change.

The cables are not close to any power source.
My ALDL is right under my cig. lighter though.Would that effect things?
The cables going to my laptop are not close to any other wires though.

As far as trying other Bin's,they all come back screwed up like that.
Tried the stock AUJP,v1,v2,v3,all the VE tables come back looking like that.

It's messed up,I know.

 

Just went and removed my Prominator and put in my orig AUJP chip.
Now I couldn't read the VE tables with TunerPro but here are some ALDL readings.

BLM-108
INT-118-128
PW-.50-.51
O2 sensor toggled between 100 and 800mv
nock counts-12 not sure how acurate that is though but the
ECM is pulling out 1-5deg of timing as well.(prob. due to knock counts)

As with the Prominator when in 3rd(700R4,non-comp. controlled) and get on the gas then let off the gas I get a few backfires out the tailpipe.

I assume with how rich I'm running I'm dumping unburnt fuel into the exhaust and then when I let off the gas air is being sucked back into the exhaust to ignite the unburnt fuel.

I don't know gentlemen...but .this is REALLY messed up.

 

Do you have the VSS connected and has the correct pulses per mile of 4000 ?
Might explain some of what your seeing.
Not with the strange tables but the backfire etc.

 

I run a aftermarket VSS.Got is from Jim's performance.Here it is,about 1/2 way down the page.
http://www.jimsperformance.com/carty.html

It's inline on my speedo cable.Yes it's a 4000.My speedo and the MPH on TunerPro are almost exactly the same.

Thinking back,it seems the backfire started after I installed the VSS.

The richness has been an ongoing thing eversince I installed the TPI.

My cam is not stock.It's an R/V cam,good low end torque.
I'm at work right now.I'll get the cam specs in the am

 

Since it does run, You may have injectors that are bigger than you think or the fuel pressure is higher.
Adjusting the injector constant higher "should" get your richness lowered but is not the correct way, just a starting point.
do you have a pressure gauge that you can check it with?
Then do the calculation to get the injector constant correct.
Be sure the communications are setup correctly.
If you can't get a bin to go into the Prominator and then read it back out you'll need to fix that.
You'll never know if you programmed the right thing.
Could be a major part of what is going on.

 

I have a fuel pressure gauge.
42-43psi at idle.As far as how much psi when I'm driving,that is something I need to check.

I have 17inhg of vacume at idle with this cam.
SpeedPro CS1034 cam
-214 intake,224 exhaust duration with 443,465 of lift.

24lb injectors.That's what I was told when I bought mt TPI setup.

I thought the S_AUJP was set with 24lb injectors?

 

I believe it is set for stock 22# injectors.
The one I sent was set at 26.

 

My mistake,I just looked at the paperwork I got with my TPI,I have 22lb injectors.

 

42-43 psi idle is a lot of fuel pressure for a stock engine-- back it down, this is probably your richness. This much pressure idling will probably give you 48+ psi WOT. You need to pull the vac. line from your regulator idling to check WOT pressure.

 

Fuel pressure while idleing,with the vacume line off,is about 45psi.
This is a stock regulator.It's not adjustable.

I know how to make it adjustable via a washer,nut,a couple tack welds and a bolt.

I'm going to have to get a WOT psi reading before I start ripping my reg. apart.

Thanks for the suggestion though.

 

Woops, I assumed you had an adjustable reg. since you were posting specs. I know with a TPIS, that much fp at idle would probably generate too much at WOT.

 

Actually factory spec for a '92 TPI is 43-47 psi with the vacuum line disconnected. With the cam and possible others mods some serious tuning is required.

RBob.

 

I'm REALLY trying to learn this programming stuff.Jeez it's ALOT of stuff to take in.
I've been a member since 2001 but have been hitting the board pretty heavy for about the last 4 months,reading the stickys and all.

It just seems things are not sinking in.

I really want to learn this stuff but it seems that the changes I think I make are screwing things up.

Hell I'm not even sure if I'm reading my Bins properly or not.

Traxions articles are making some sense(read them about 5 times now) but I'm just trying to edit the VE table so I can get my truck running right.

I can't seem to translate his articles into how to do them with my editor(TunerPro)

I'm kinda imbarressed admitting this as I should be alot further ahead with the time I've spent on TGO.

So I'm gonna say it.....I need help (head hung low,hands in pockets while kicking at the dirt).

 

I have no experience with the Prominator.

I too did a lot of researching and reading before trying the DIY-PROM route. Click here to see how I did it. I have included many of the TGO threads that contained useful information (IMO).

My advice would be for you to invest in the equipment I list here.

The new version of BURN1 automatically offsets for various chips, so that is one less thing to worry about. You can start with a fresh AUJP bin and tune from there. You have a heavy vehicle like my Suburban. I was shocked just how much timing I had to take out. But after reading Grumpy's take on timing, I bit the bullet and kept pulling it out. It's a big difference from the stock AUJP bin for an application such as a Blazer or Suburban. If you PM me your Email address, I will share my bin, but keep in mind it is for a stock TBI engine, so you will definitely need to make adjustments for your 24# injectors, bigger cam, etc; but it is basically an AUJP bin with a lot less timing across the board (except in the idle range).

Don't give up, it will eventually click. Ed.

 

Until you get your loaded bin to matchup when you read it back out you'll be chasing your tail.

Provided all of your ign and fuel hardware & bpc are correct, you should be able to adjust your ve tables fine.
Go over everything again if need be.