Originally Posted by WRX-335
Want to upgrade from stock 335i turbo to something else any websites or shops that have upgrade kits.(twin turbo). Can anyone lead me in the rite direction please. Also after you have fitted the new turbos do you have to tune the car?
I wouldn't do it WRX335, there's a thread were a guys tranny went. He has the RB turbo upgrade. Keep em stock don't think the tranny likes that kind of action.