My Ltrims refuse to go to 0 aghhhhh!!!!! Help!!!
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TECH Junkie
Joined: Jan 2002
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From: At the office
My Ltrims refuse to go to 0 aghhhhh!!!!! Help!!! Alright. First of all I reset my CPU to get the Ltrims to 0. They were pretty low at first, but have since steadily risen. I've had my MAFT set at +4base -3WOT the whole time and no matter what I do I can't keep the Ltrims at or below 0 at part throttle. I even have a fuel pressure regulator set at 62psi to try to add extra fuel, but to no avail. At 0% throttle my car is between 0.8% and 4.5% Ltrims. At 0.4% throttle my car is between 3.5% and 7.8% Ltrims, and anything above that at part throttle is between 9.5% and 12%.
WOT L trims are between 9.5% and 12% as well.
I've been thinking about either getting bigger injectors (maybe mine are maxed out but I only have about 360rwhp with bolt-ons), or putting the stock MAF back on.
Any suggestions??
WOT L trims are between 9.5% and 12% as well.
I've been thinking about either getting bigger injectors (maybe mine are maxed out but I only have about 360rwhp with bolt-ons), or putting the stock MAF back on.
Any suggestions??
Re: My Ltrims refuse to go to 0 aghhhhh!!!!! Help!!! 1. adjust your MAFT base richer, you are aiming for slightly negative avg ltrim values. Get those inline first, than adjust your WOT.
2. you don't need a fuel pressure regulator, all you need is your MAFT, or better yet LS1 edit.
3. You don't need bigger fuel injectors.
2. you don't need a fuel pressure regulator, all you need is your MAFT, or better yet LS1 edit.
3. You don't need bigger fuel injectors.
Thread Starter
TECH Junkie
Joined: Jan 2002
Posts: 3,015
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From: At the office
Re: My Ltrims refuse to go to 0 aghhhhh!!!!! Help!!! </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Nic00Z28M6:
<strong>1. adjust your MAFT base richer, you are aiming for slightly negative avg ltrim values. Get those inline first, than adjust your WOT.
2. you don't need a fuel pressure regulator, all you need is your MAFT, or better yet LS1 edit.
3. You don't need bigger fuel injectors.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The problem is that the MAFT base is at the richest setting and I'm still getting these lean Ltrims. So there is no more adjusting that I can do.
<strong>1. adjust your MAFT base richer, you are aiming for slightly negative avg ltrim values. Get those inline first, than adjust your WOT.
2. you don't need a fuel pressure regulator, all you need is your MAFT, or better yet LS1 edit.
3. You don't need bigger fuel injectors.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The problem is that the MAFT base is at the richest setting and I'm still getting these lean Ltrims. So there is no more adjusting that I can do.
TECH Apprentice
Joined: Jan 2002
Posts: 364
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From: Princeton, IN
Re: My Ltrims refuse to go to 0 aghhhhh!!!!! Help!!! vacume leak, or you dont have all the bands tight around the TB and maf. also turn your maft to base 0% and wot to 0% reset the computer and drive it for about 30 min's then start to turn the base 5% every min, you should start to see the ltrims drop, and yes a little rich is ok. i had to set my base to the 5th setting which is not used but it made the mix richer, just right really.
TECH Apprentice
Joined: Jan 2002
Posts: 364
Likes: 0
From: Princeton, IN
Re: My Ltrims refuse to go to 0 aghhhhh!!!!! Help!!! yeah, worked for me. i ported my maf as much as i could, the ends line up with the maf it's self
i had it at 4 then moved it to 5 ltrims went down to 0% other then what looks like a bad o2 on bank1s1
yes 5 would be 25%
i had it at 4 then moved it to 5 ltrims went down to 0% other then what looks like a bad o2 on bank1s1
yes 5 would be 25%
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Thread Starter
TECH Junkie
Joined: Jan 2002
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From: At the office
Re: My Ltrims refuse to go to 0 aghhhhh!!!!! Help!!! I took off the MAF ends and my Ltrims went down about 15% right off the bat!!!
My car took a big performance dump after the swap, but my car has since picked up some of the power after re-learning. I have the Ltrims at -1.6% at 1/3 throttle, and about 2.3%-4.7% at 1/2 throttle.
I figure one more turn on the MAFT to a +3 base and I should be right where I want to be.
My car idles at about -10% Ltrims....
After I'm able to keep my car under the 0% Ltrim level at 1/2 throttle, I'm going to start tuning the MAFT for WOT.
My car took a big performance dump after the swap, but my car has since picked up some of the power after re-learning. I have the Ltrims at -1.6% at 1/3 throttle, and about 2.3%-4.7% at 1/2 throttle.
I figure one more turn on the MAFT to a +3 base and I should be right where I want to be.
My car idles at about -10% Ltrims....
After I'm able to keep my car under the 0% Ltrim level at 1/2 throttle, I'm going to start tuning the MAFT for WOT.
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