Help with LS1 edit please.
Thread Starter
Teching In
Joined: Feb 2002
Posts: 4
Likes: 0
From: NJ
Help with LS1 edit please. Hi,
I installed a cam and aftermarket heads on my C5 and have a couple of questions about LS1 edit.
I have been playing around with it for about a week and am really lost. First off, how do you adjust the a/f and quality of the idle? I set the rpm and now the car stalls and hunts for idle when warmed up. I did the idle relearn and it didn't help.
Second question is, how do I adjust the a/f ratio at part throttle? I played around with the MAF settings but that made my WOT a/f ratio so far out that the PE vs. RPM table couldn't compensate. The best I could get WOT was 11:1 a/f ratio. So I figure I am adjusting the part throttle wrong.If not in the MAF table, what table do I make adjustments in?
Any help is appreciated.
I installed a cam and aftermarket heads on my C5 and have a couple of questions about LS1 edit.
I have been playing around with it for about a week and am really lost. First off, how do you adjust the a/f and quality of the idle? I set the rpm and now the car stalls and hunts for idle when warmed up. I did the idle relearn and it didn't help.
Second question is, how do I adjust the a/f ratio at part throttle? I played around with the MAF settings but that made my WOT a/f ratio so far out that the PE vs. RPM table couldn't compensate. The best I could get WOT was 11:1 a/f ratio. So I figure I am adjusting the part throttle wrong.If not in the MAF table, what table do I make adjustments in?
Any help is appreciated.
Re: Help with LS1 edit please. I can't answer everything, but in regards to the idle.
What are your IAC counts at idle? They need to be 30-50, preferably around 40. If they're higher than that, you probably need to make the hole in the throttle body blade very slightly larger. Like 13/64" or somewhere just slightly larger than the hole that's there. The amount that you need to tweak the hole depends on the number of steps that the IAC motor is out. If it's at 140, you'll need to drill bigger than if it's at 90.
HTH,
Andrew
What are your IAC counts at idle? They need to be 30-50, preferably around 40. If they're higher than that, you probably need to make the hole in the throttle body blade very slightly larger. Like 13/64" or somewhere just slightly larger than the hole that's there. The amount that you need to tweak the hole depends on the number of steps that the IAC motor is out. If it's at 140, you'll need to drill bigger than if it's at 90.
HTH,
Andrew
Staging Lane
Joined: Dec 2001
Posts: 56
Likes: 0
From: Hopkinsville, KY
Re: Help with LS1 edit please. Camaroholic, he said he has a C5. There is no hole in the TB or an IAC motor. There is a big debate going on right now on the LS1 Edit mailing list as to whether or not it is necessary to drill the TB some say you can tune it out but they are not specific as to what tables to use. At any rate if you do drill the TB the IAC count should be in the 70 range for the C5.
Check this link www.ls1edit.com/pipermail/ls1edit/
there was a lot of information about this topic in the last couple of day's
Check this link www.ls1edit.com/pipermail/ls1edit/
there was a lot of information about this topic in the last couple of day's
