So just ordered my Stillen SC

Originally Posted by mikey1600

Stillen will flat out say not to do it obviously to cover themselves, even to get the 9lb pulley you have to sign a waiver and in the description it says using this pulley with stock tune or stock stillen tune could result in catastrophic engine failure without getting a custom tune, I mean of course it will if you are red lining the thing with a not designed tune for the increased boost.

after people who have done so if possible

Originally Posted by ANMVQ

Well your right about they'll say no, Right in the instructions is say in red bold letters , DO NOT START without the tune. Heck I couldn't start mine ON their tune, car would flood out. :/ I have to had it sent back and forth for 3 days to get it right then custom tuned it anyways, Why not just flat bed it to your tuner and let them do it. I'm sure he'll have a base tune to work off on his laptop, mine did.