INJECTORS (RUNNING TOO RICH?)

[toyinhawaii]

Hi All,
Seems i am running too rich, not sure if its the injectors or maybe the O2 settings.
Issue:@ idle sitting in garage(especially here) or driveway it smells very rich and also i go thru fuel kinda fast for just sitting in the garage idling. I also get no CEL light coming on either.
Its been a while since i played around on the EE HACK and Tuner Pro and i've sorta lost my navigational skills. i ran across a youtube video the other day and the person was talking about editing the equation on the Table or Scalars (forgot where he was at) to get the correct numbers for the injectors but i cant find that video again.
SCALARS:INJECTOR FLOW RATE setting is @ 24.87
CYLINDER VOLUME setting is @ 717.25
MAP THRESHOLD TO ENABLE WOT setting is @ 15.00

I also did a Cylinder test in EEHACK and came up with:
CYLDROP Memo ::
(Higher is better...)
CYL1=33.4 CYL2=36.9
CYL3=36.4 CYL4=38.1
CYL5=39.2 CYL6=39.8
CYL7=45.2 CYL8=39.2 ........................ Are these values ok?

BOSCH 3 INJECTORS (24LB.)
COMP CAM 07-305-8
PCM 16188051

I hope i've given enough info.... Thanks!

[kur4o]

MAP THRESHOLD TO ENABLE WOT setting is @ 15.00

Looks like your at WOT all the time. Better start with stock bin and work from there. First dial EOIT target and individual cylinder trims.

[toyinhawaii]

i had my bin edited by Moe back in 12/20 according to my specs/what i have, car is still a garage queen and probably driven for testing less than 10 miles since then. what kind of value should i have for WOT @ idle?

sorry, is "First dial EOIT target and individual cylinder trims" this in the EEHACK>Test tab> and am i sliding the dials on the #1-#8 cyl.to the maximum setting?

[kur4o]

You can post your current bin for now.

[toyinhawaii]

here is Moes edited bin for my LT1

[kur4o]

Do you have the base[stock] bin file. The pcm comes from a 4.3 v8, so we need to find the base file and see if is suitable for your current setup.

[LeMarky Dissod]

MAP THRESHOLD TO ENABLE WOT setting is @ 15.00

Looks like your at WOT all the time. Better start with stock bin and work from there. First dial EOIT target and individual cylinder trims.15KPa is GM's OE setting.
Besides, Enabled is not necessarily always Active; the TPS Threshold for WOT-PE vs RpM, Low Temp table must also be used.
Do you have the base[stock] bin file? The pcm comes from a 4.3 v8, so we need to find the base file and see if is suitable for your current setup.Although 16188051 pcms were used for both 4.3L L99 and 5.7L LT1 V8s (in Caprice sedans), it's a bit strange that Moe used a 4.3L calibration as the base file for this tune.

[toyinhawaii]

15KPa is GM's OE setting.
Besides, Enabled is not necessarily always Active; the TPS Threshold for WOT-PE vs RpM, Low Temp table must also be used.Although 16188051 pcms were used for both 4.3L L99 and 5.7L LT1 V8s (in Caprice sedans), it's a bit strange that Moe used a 4.3L calibration as the base file for this tune.

oh? really? is that what he used, how can you tell? cause yes,,, mine is a 5.7L

[LeMarky Dissod]

oh? really? is that what he used, how can you tell? cause yes,,, mine is a 5.7LThat your engine is a 5.7L is obvious, and stipulated. I'm commenting on the file you posted.

Ok, after doublechecking
The VIN of the file you posted corresponds to a 4.3L L99 V8 Caprice sedan, whose calibration ID would be 16230191
However, the calibration number of the .bin file you posted is actually 16199871.

It still does not rule out the possibility that the .bin file was originally an L99 .bin file, though.

[kur4o]

Vin and os are related to pcm. Maybe it was used once in a 4.3 v8. Later a reflash might have occurred with different bin, but the cal id are zeroed so it is really hard to tell what is inside the pcm.

[toyinhawaii]

That your engine is a 5.7L is obvious, and stipulated. I'm commenting on the file you posted.

Ok, after doublechecking
The VIN of the file you posted corresponds to a 4.3L L99 V8 Caprice sedan, whose calibration ID would be 16230191
However, the calibration number of the .bin file you posted is actually 16199871.

It still does not rule out the possibility that the .bin file was originally an L99 .bin file, though.

wow, i cant believe that ?? this is my original bin i sent Moe

[LeMarky Dissod]

In post #7, I saw the file's VIN - 1G1BL52W8RR101108 - and looked it up on tis2web.service.gm.com/tis2web.
1G1BL52W8RR101108 corresponds to calibration number 16230191, which is a '94 L99 4.3L with a 2.73 rear axle.
I'll admit that was not very thorough, since I only looked at the .bin file's VIN.

Looking at the file's calibration number directly, yields 16199871, which is, so far as I know, not a GM calibration part number.
It does not rule out the possibility that the original .bin file was a 4.3L L99 .bin file, with pains taken to transpose all the 5.7L LT1 values into it so it would work well with a 5.7L LT1.

I apologize for the distraction. Fine-tuning the injector data should make this .bin file work more than well enough.

[toyinhawaii]

In post #7, I saw the file's VIN - 1G1BL52W8RR101108 - and looked it up on tis2web.service.gm.com/tis2web.
1G1BL52W8RR101108 corresponds to calibration number 16230191, which is a '94 L99 4.3L with a 2.73 rear axle.
I'll admit that was not very thorough, since I only looked at the .bin file's VIN.

Looking at the file's calibration number directly, yields 16199871, which is, so far as I know, not a GM calibration part number.
It does not rule out the possibility that the original .bin file was a 4.3L L99 .bin file, with pains taken to transpose all the 5.7L LT1 values into it so it would work well with a 5.7L LT1.

I apologize for the distraction. Fine-tuning the injector data should make this .bin file work more than well enough.

Thank you Lemarky... no apologizes needed. you have always gave me and others priceless knowledge!

if this helps you more, along with my "8051 PCM ID here is the VIN from the Caprice 1G1BN52P3RR159873 and the Calibration # 16230221, Also, everything has been transplanted into an 84' El Camino.

"Fine-tuning the injector data should make this .bin file work more than well enough".... could i get guidance on how to do this?

[toyinhawaii]

Here are a few pics of the EEHACK i took tonight

[kur4o]

I don`t see nothing weird in the tune. A basic start-up tune to get you running. Can you give more info on what is done to the car to the slightest detail, so we can get you in the rigth direction of tuning.

[toyinhawaii]

I don`t see nothing weird in the tune. A basic start-up tune to get you running. Can you give more info on what is done to the car to the slightest detail, so we can get you in the rigth direction of tuning.

ok, here you go,,,Thanks!

Comp Cam #07-305-8 with springs and rollers 1.6/ #2691516

Dual Long tube headers, with O2's mounted right after the collector

Axle ratio @ 3:08

Wheel Dia @ 235 Front-245 rear/45/17

New Bosch 3 24lb injectors

Bored out to 0.030 over

Transmission: rebuilt with Transtar shift kit#T74165E

[toyinhawaii]

Also, i just did a "READ CALIBRATION UPLOAD" from Flashhack, this should be the same one as in Post#5 but??? this is whats in the Elky right now. Thanks for all your help.

[toyinhawaii]

Hi All, just wanted to bump this up to see if tuning/recalibrating the injectors is whats needed...Thanks in advance.

[LeMarky Dissod]

Hi All, just wanted to bump this up to see if tuning/recalibrating the injectors is whats needed...Thanks in advance.If you have the injector constants right, then you probably need to adjust things like the end of injector timing.

[toyinhawaii]

If you have the injector constants right, then you probably need to adjust things like the end of injector timing.

the injector constants flow rate is set @ 24.87lbs the bosch3's are 24lb. IDK, if this is too technical but does .87 make a difference?

i searched and found this post "fuel Injection>GM EFI Systems>$EE / LT1 Injector Swap Running Rich>Post#1 ,4th paragraph and tried to follow for some guidance. there are 53#, I didnt want to get confused and read the wrong stuff, but is this what you are referring to "end of injector timing"

[LeMarky Dissod]

the injector constants flow rate is set @ 24.87lbs the bosch3's are 24lb. IDK, if this is too technical but does .87 make a difference?Very highly doubt it. Don't know why GM LT1 injector constants are either 24.87 (OE Iron Heads) or 24.91 (OE Aluminum Heads), but even if they had different part numbers, it's a very minuscule difference that is better addressed by OTHER things BESIDES base flow rate.

Two different fuel injectors, even if they have the same peak flow rate (say, 24lb / hr), may have a different sense of timing in regards to delivering the same amount of fuel; a schlemiel 24lb injector may open slower or quicker than a xiaoping 24lb injector, and thus behave differently at idle.
i searched and found this post "fuel Injection>GM EFI Systems>$EE / LT1 Injector Swap Running Rich>Post#1, 4th paragraph and tried to follow for some guidance. there are 53#, I didnt want to get confused and read the wrong stuff, but is this what you are referring to "end of injector timing"Just read that thread. Mostly discusses startup, much less about idle.
If it starts reasonably quickly enough, worry more about things like minimum injector pulsewidth, and the timing of those pulsewidths.

There is no substitute for properly characterized injector data, especially 'below the knee'.