I need to know if i need a tune!
hey all, my friend just bought a 2009 WRX sedan with a Perrin intercooler, aftermarket header, K&N intake, and full TBE. after researching this site it sounds like he may be in danger of harming his engine if he does not get a tune on it. unfortunately i have never really dealt with the WRX or many other turbo applications. however i do know that mods such as headers and full exhaust and intake can start to push the limits of a factory ecu on an N/A car. any help is greatly appreciated. Thanks Guys!