MAF flatline at high Hz
Thread Starter
TECH Addict
Joined: Nov 2001
Posts: 2,556
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From: Nawf Carolina
MAF flatline at high Hz Ok I've been playing around with LS1Edit on a friend's 00 SS. He installed headers and it was running very rich and stumbling when you would apply gas.
Turned off some codes. Bumped up speed limiter, etc.
Now we get to scaling the MAF. Ltrims were maxed at 25. So first time we multipled the whole table by 109%, that pulled them down some. Next we scaled the table by 105%, got them down even better. Now they are averaging around +5.
Should I worry about getting them negative? If so, this would be an issue because if I go to scale the MAF anymore it maxes out in the upper Hz range at like 507.28, so my question is, is this a problem? Should I not even worry about trying to get the Ltrims any lower?
J.
Turned off some codes. Bumped up speed limiter, etc.
Now we get to scaling the MAF. Ltrims were maxed at 25. So first time we multipled the whole table by 109%, that pulled them down some. Next we scaled the table by 105%, got them down even better. Now they are averaging around +5.
Should I worry about getting them negative? If so, this would be an issue because if I go to scale the MAF anymore it maxes out in the upper Hz range at like 507.28, so my question is, is this a problem? Should I not even worry about trying to get the Ltrims any lower?
J.
TECH Apprentice
Joined: Dec 2001
Posts: 314
Likes: 0
From: Salisbury, Md
Re: MAF flatline at high Hz I would put the maf table back to stock and adjust through the injector flow rate table. If you adjust the maf so far you will loose timing and have other issues. And yes, it is important that you get your ltrims negative so when you go into power enrichment (full throttle) you will be consistant in the air fuel mixture. To bring your ltrims down just take away percentages from the injector flow rate table. Good luck.
