Running lean, fuel trims off help!

[16vdohcturboawd]

My fuel trims are off and I cant figure out why. On my logger my low trim is reading 118.7%, mid is 100% and the high is 105.4% I did a boost leak test to 16psi and couldnt find any.

mod are as follows

ported evo 3 16g
ported 2g exhaust manifold
ported evo 3 o2 housing with a brand new NTK o2 sensor
2.5" Vrs turbo back exhaust
dejon intake pipe with a k and n filter with the can part of the air box cut off
punishment FMIC
ngk plugs and wires and they are gapped to .28
walbro 190

I have evo 560s and a 2g mas not installed yet, im just trying to figure this problem out first. Thanks.

 

[SBR Joe]

Nothing to worry about. Its to be expected that they get goofy when you have all the extra bolt on mods with no real way of tuning.

With my 1g running bastard 20g, 780's, EVO MAF, Supra pump and an AFC for tuning on a stock ECU, all three trims were maxed out fully lean. I didnt spend any time sweating it, it just comes with the territory. The ECU tries to compensate for all the extra air flow and thats just its way of showing you thats what its trying to do.

Long story short, no need to worry. Just get yourself something to tune with and a wideband. If AFR's are in check the fuel trim % can be totally ignored for the most part.

 

[16vdohcturboawd]

Cool, thanks for the info and the reply that helps me alot. Thats kinda what I figured, 2g intake pipe and a wideband are next on the list.