Subaru Impreza GC8 & RS Forum & Community banner


922 Views 8 Replies 8 Participants Last post by  akcel
I want to Turbo Charge a 2.5 RS so that I could have the most possible horse power, but not on the verge of detonation.

Is there a full kit out there, ie. Huge Turbo, FMIC, BOV, and so on?

Also I really want to be running maybe high 13's-low 14's, what else can you fellars recomend?

1 - 1 of 9 Posts
Usually when you turbo your car you want to get a good engine management system, a boost controller, new clutch and if you're going for big power gains you should replace your vital engine internals like pistons and transmission. On a stock tranmission you can run about 10 psi of boost (usually) before you start destroying stuff. For example, the SCC project Impreza destroyed a half dog gear box because it had so much torque. Also you might want to reconsider getting the biggest turbo you can find because issues such as turbo lag can arise. Larger turbos take more energy to spool up to full boost. Also a large turbo will cause you to have to change the compression ratio of your pistons if you want to safely run your car without piston knock or detonation. My advice would be to start off with a simple kit that isn't big and keep the boost under 10 psi. This way you can retain your stock transmission. I would also recommend a 3 inch cat back system and a new clutch to realize the full potential of your turbo system.
See less See more
1 - 1 of 9 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.