Subaru WRX Forum

Subaru WRX Forum (http://www.wrxtuners.com/forums/)
-   Bolt-on Tech (EJ255/EJ257 2.5L '04-07 STi and '06-07 WRX) (http://www.wrxtuners.com/forums/f75/)
-   -   hks hi power exhaust (http://www.wrxtuners.com/forums/f75/hks-hi-power-exhaust-29063/)

mkelty715 07-03-2010 12:20 AM

hks hi power exhaust
 
looking to add on a hks hi power exhaust, cbe. stock pipes, does anyone know how much it will improve hp? or how much of a benefit a turboback is compared?

newtothegame 07-03-2010 10:57 AM

A CBE (cat back exhaust) is more for look and sound. One of the biggest restrictions on the car is the factory downpipe. With a tune and a bellmoputh downpipe you can unlock a good bit of HP. The first thing you should really start looking at before anything else some type of EM (Engine management) i.e. Cobb AP, Opensource, theres alot of knowledge about both on this site and on the internet. Check this link out:[url=http://forums.nasioc.com/forums/showthread.php?t=533787]Unabomber's Manifesto - NASIOC[/url] alot of info about modding in general.

brfatal 07-06-2010 01:56 PM

Yes, your WRX catbacks are glorified noise makers, not power makers. It's the downpipe you want to replace for that (along with the required tuning to go along with it). You'll see a considerable bump in power, power delivery, and general driving pleasures.

mkelty715 07-10-2010 09:13 PM

thanks, I really appreciate the help.

Kramericaa 08-29-2010 11:52 AM

HKS is loud, better bring ear plugs if you want to keep your hearing. Does sound damn good though.


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