gscmiller

Just popped it in the mail for overnight today! Car is stock except for nxt axle back and corsa's pro5 cold air kit. Was throwing bank 1 & 2 lean codes after the install. Cant wait to get it back and see what kind of diff thsi made. Ecs was great to deal with over the phone

DOUG @ ECS

Thanks, We will turn it around the same day received!

tblu92

Very common codes for high flowing cold air intakes as yours and the Vararam--Good news is that a lean code means that the engine is flowing more air than stock !!The ECM is adding fuel to compensate for the added airflow but it only helps you at P/T until your tuner corrects the leaness----At WOT you never want the ECM to have to correct the leaaness by adding fuel via your fuel trims at P/T --because at WOT that added fuel is added to the fueling as a safety which will make your car pig rich and lazy ---Rather confusing---added airflow will make it lean at P/T and rich at WOT----So you always want your fuel trims to be slightly negative or at "0" so NO fuel is added at WOT---
Your tuner will fix this-----Don't expect more WOT HP until he does---as I say it will be overly rich