WOT tuning help
Thread Starter
Joined: Nov 2001
Posts: 7,903
Likes: 1
From: Cleveland, OH
WOT tuning help I posted this in the pcm section but just can'tfind a solution.
I am preparing for a dyno pull so I am locking the converter in 3rd and going WOT at 2000 rpms. A/f is fine at 11-1 and then at 3200 it starts to shoot straight up to 15:1 by 3900 rpms. If you let off the gas a bit so it passes that section and then go back WOT...a/f is fine all the way from 4100 to redline. I have tried adjusting pe vs rpm....delta airflow limit......calc airflow...and I just can't get anything to make it respond.Fuel pressure is fine and it stays in Open loop the whole time it is WOT. Any ideas?
I am preparing for a dyno pull so I am locking the converter in 3rd and going WOT at 2000 rpms. A/f is fine at 11-1 and then at 3200 it starts to shoot straight up to 15:1 by 3900 rpms. If you let off the gas a bit so it passes that section and then go back WOT...a/f is fine all the way from 4100 to redline. I have tried adjusting pe vs rpm....delta airflow limit......calc airflow...and I just can't get anything to make it respond.Fuel pressure is fine and it stays in Open loop the whole time it is WOT. Any ideas?
Thread Starter
Joined: Nov 2001
Posts: 7,903
Likes: 1
From: Cleveland, OH
incons...low compression motor..h/c. This lean spike is only at the 3200-3900 range. At the track I never noticed it because it goes by so fast in first gear and you stay above that rpm in other gears.
Are you still using the MAF or is it a speed density tune? Are you using the factory or an aftermarket pcm? Are you taking care of fueling with just programming or is a boost a pump involved?
Thread Starter
Joined: Nov 2001
Posts: 7,903
Likes: 1
From: Cleveland, OH
I THINK it is fixed. Hobbs switch for 2nd pump was flakey...kicking on/off erratically. My setup is dual walbro 340s....rail mounted regulator vacuum/boost referenced...stock pcm with tuning via ls1edit and lm-1 wideband
I remember from an old post that you have a bartow county tag. Are you near clayton or bartow? I have never seen how the incon TT's are packaged, and would like to see your ride.
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Thread Starter
Joined: Nov 2001
Posts: 7,903
Likes: 1
From: Cleveland, OH
I live in Smyrna...car registered in Bartow...wrench in Clayton. Unfortunately, you can't see anything but the up pipe on incons. Everything else is hidden. Shoot me an email and I'll send you some pics on a motor stand.
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