Hey guys, what should my ltft's be with a inlet/outlet i/c ported blower, i/c ported lim, speed daddy headers, 3.4 pulley?
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09-12-2011
Hey guys, what should my ltft's be with a inlet/outlet i/c ported blower, i/c ported lim, speed daddy headers, 3.4 pulley?
09-12-2011
on a stock tune? Probably not +-4%.
09-12-2011
I actually have an overkill 3.4 tune.
09-12-2011
I see, well if overkill tune is not adjusted for the ported stuff, I would still guess they would be off that range.
Sell your scangauge and get a powrtuner =D
09-12-2011
Ltft should be locked in as close to 0 as possible. What is it showing?
09-12-2011
16.4's
09-13-2011
Originally Posted by bluegtp91
16.4's
09-13-2011
LTFT's can vary greatly even between stock cars. this is one reason why custom tuning in person or via data logs is so important. a canned tune, even the best canned tune (imo overkill is the best when it comes to canned tunes) a canned tune can not take into account where your base line LTFT's are before the tune. if you could supply a data log to who ever is making your canned tune... this will greatly improve your tune and help to get your trims where they need to be.
but ideally trims should be zero. +- 5 is good and at WOT should be zero is what most normally tune for. As temp humidity and changes in season will make that 5% change anyway over a year.
09-13-2011
Headers will always screw with O2 readings. You will typically always get overly positive trims at idle and depending on how many exhaust leaks you have, positive trims while crusing.
09-14-2011
Well it sometimes locks in at 0.0 when cruising and other times around 3.x or -3.x etc etc. Its all over the place. Itried looking to see if any of my vacuum lines where cracked but couldnt find anything. Should i try sealing my headers better?
Below is a pic of it locked at 0.0 when at a stop light
And heres a pic of it while i was cruising.
09-14-2011
+-5% in cruise is fine, they move around all the time, but as long as they are within that range youre good. They should only be stuck in 0 at WOT.
09-15-2011
oh okay. Guess ill keep scanning.
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