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I have been having a similar problem. Large cams may have high MAP KPa during idle. Changing the VE table to correct the AFR seems to result in unrealistic airflow values frim the VE table. You can...

I am still trying to get a LS6 to idle. I have confirmed injector flow rate is correct by model number. I have tried 50+ flashes and I am starting to get expected results based on cal changes. I...

I am tuning a LS6 with many alterations. I have my fingers crossed that someone might be able to look at the attached log file and help me understand:
Why do LTFT and STFT max to full rich even...

I have 2 PCMs that have Grand Am Cup labels on them which came with a C5. Not sure of history and I do not believe the car was ever raced in the Grand Am Series.
One PCM had been previously tuned...

Its been a long day...

I am occassionally getting the random misfire P code. Seems that the random misfires have gone away after chaning the VE table. I still get them sometimes at lower RPMs. I added a bunch of other...

We installed a larger cam and experiencing a serious idle issue. I have to hold the throttle pedal down just to start the car and to keep it running. I am attaching a log file. The AFR wideband was...

Thanks 5.7ute... I will change values back to stock. I and try something else as the problem.

BTW cam 248/254 110 high lift (1.7 ratio)

I am experiencing strange idle and looking to reduce possible problems.
LS6 with mid to large cam. I installed a LS2 throttle body on the FAST 92mm intake. I have a 2004 valley cover with the port...

I have changed to the new FAST 90mm big mouth intake over a LS1 engine. We have bought and installed a conversion cable to use the 2001 Corvette C5 wiring harness with the LS2 Throttle Body. Our...

Great. Seems simple. You guys have been really helpful.

Thanks for the help. I believe we are all on the same page!

My last step is to calibrate the MAF. I do not have a wideband to log flow. I only have the wideband O2. Is there any autoMAF...

Blacky,
Yes, just a typo on the colors. The hard drive was defragmented before the second day of dyno testing.

I have tested a different car and EFI logging was perfect, no problems. I even...

Blacky - Thanks for the help.
I will go back to the dyno to find out the information from the EFILive "profiler" window.

The laptop runs XP home SP2, 1.7Ghz, 1G RAM
I usually have EFI Tune...

So the PCM will use which ever value is richer. I was concerned that it is a blend.

AFR=14.68
13.21=.9 X 14.68

Does a value of .9 in B3618 = a value of 13.21 in table B3605 (excluding other...

What is the best way to get the PCM to produce AFR around 13 after I complete the AutoVE?

Option One: I can either change the calibration {B3605} “Commanded Fuel When in Open Loop” to desired...

I am attaching a couple more logs that show my problem. Log 11 only has 4 channels with a delta of 6.7 seconds.
The car does not loss power. We have got it producing medium results via 60+ trial...

I spent another day at the dyno and having to tune via trial and error to get the VE tables close to right. I really need to resolve the logging issue. Does anyone else have a problem logging? It...

Word of advise. Don't forget to place your foot on the brake when you rev to 4000K / fuel shut off. I spent over a hour before i figured out that my PCM would not learn because I did not press the...

Spent the day at the dyno. We tried to use autoVE with EFI 7.5.5 V1.2 to log and tune. The car would lose power during the runs after 4500 RPM. We tried to determine why but the log seemed to lock...

Problem solved. Thanks for the help. All working as expected.

Joecar,
Thanks, no one else has sent it. I spoke with FAST / Comp Cams and here is the info for the High Res mode only. Do not have the other 2 modes. Most likely not needed. Thanks for your help...

I have connected a wide band (FAST product 170402) to my EFI V1. Ground from the to pin D and signal to pin E. I have installed V7.5.5 and need to get the analog data to tune. What is the best PID...

We fixed all mechanical issues that have been causing the strange results. All cylinders are running correct. (No flashing MIL, it was the dead cylinder 8). I have a FAST wide band that should be...