Reply to thread

Message: <blockquote data-quote="tekcisGT" data-source="post: 644490" data-attributes="member: 12148">I have to bring it in this week for a few pulls to get a base line so my tuner can send me a new prog. for my SF3.Car is as follows:98 GT 4r70wPi swapProfessional Prod. intake / Upper Plenum / 75 T.b.JBA shorty headers, Magnaflow catted X, Flowmaster 40's dumped.BBK cold air kit w/ K&NSCT FC3 tuner, which is where the question lies... does it matter if i keep the existing tune i've put in there or should I put it back to stock?Any takers on numbers? I know I need a 90mm MAF - but he's a cool dude and said he'd tweak it for nada when I grab one.Im guessing :dontknow: 240 ish hp 270 +/- 10 tq. before the tune. Car also has 18's w/ 3.73's but dont think it matters.</blockquote>