Idle Problem with log file

[Rusty]

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 not connected.
Getting strong power at dyno...

Also I am attaching a tune file for anyone that can lend a helping hand with the larger cam idle issue. I really need help fast as going to trask in 9 hours.

Thanks in advance!

[5.7ute]

Lower the VE table in the lower RPM areas. Since your larger cam is idling in a much higher map range you will be overfuelling by a fair amount.

[LS1_Dragster]

No expert here but I'm guessing a vacuum leak. Your MAP numbers are off. A wide band would help show whats really going on too. How big is your cam?

Lee

[mr.prick]

Not to be snide but,
why not log some idle PIDS if your having idle issues?

What is the AFR while idling?

[5.7ute]

No expert here but I'm guessing a vacuum leak. Your MAP numbers are off. A wide band would help show whats really going on too. How big is your cam?

Lee

His cam is 248/254 on a 110lsa.

[Rusty]

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 PIDS. Attached is another log but lower frame rate.

[mr.prick]

Too many channels and too short of a log.

[SOMhaveit]

Looks like a CTS-V VE table. Your IFR is scaled up from stock values approx 3-4%. If I remember correctly, a larger IFR value with the same injector will lean the AFR out. Lowering the VE would call for less fuel and lean the AFR even further.

Without some attempt to do the RAFIG and show Intake air Controller steps and TPS position at idle and AFR commanded and actual, it's not realistic to start making guesses at what to do.