LTFT at +25 after H/C change?
Thread Starter
Teching In
Joined: May 2003
Posts: 27
Likes: 0
From: CA
LTFT at +25 after H/C change? I have a Cartek Stage II H/C set up and when logging with EF-Live, i get a LTFT of +25. Is this believable? I know i need to trim this in as my next step, but i here people taking of +5 to +9 and I'm concerned this may be sings of another issue. Anyone else seens LTFT at this level?
Re: LTFT at +25 after H/C change? do you have ported ends or any aftermarket MAF? When I did my cam swap with the ported MAF ends I caw +23 to +25 so i took those off the car asap! With the stock MAF my LTRIMS came down to -3. Now I have the SLP 85mm and my LTRIMS are 0 to +8. You want them -3 for perfect, but i settle for +-5 or so cause you cant get it perfect.
Thread Starter
Teching In
Joined: May 2003
Posts: 27
Likes: 0
From: CA
Re: LTFT at +25 after H/C change? I had a ported MAF and large throttle body and Z06 intake. When i changed the MAF back to stock, they went down to 20. Is i tune it out with LS1-Edit, is this OK?
TECH Apprentice
Joined: Jan 2002
Posts: 364
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From: Princeton, IN
Re: LTFT at +25 after H/C change? check for vacume leaks, that will cause your ltrims to hang over 25% ported maf can cause this problem too. also if it was a vacume leak you would not beable to tune it out... i would check it out before you do try to tune. once the car is warmed up are the ltrims just setting at 25% or are they like 15 or 20 then you you take off they go over 25%? if so then i would say there is a very good chance it's a vacume leak. i had the same problem
