I dynoed and had a 11.4-11.6 average A/F with a catback, test pipe, flash and mbc at apprx 21.5 psi spike and holding 19-20. What will my a/f(apprx) be after downpipe install and 02 housing? Will the car run lean? I need an approx a/f ratio so im not concerned if the car will run lean. Thanks

 

Bump!! Need Some Info Please !!!

 

that afr seems pretty lean for a dyno because once you get on the street, it'll lean out a bit by up to a full point.