The bottleneck on these cars is at the catalytic converters. HFC's, test pipes, or ART pipes would do the trick. Some people, like me, have chose to keep their OEM cats because I don't want my aftermarket exhaust to be any louder than it already is.

 

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No, that's not where the restriction is. Biggest bottle neck is in the OE cats, installing HFCs will keep it legal in most states and give you another few HP which we don't mind.... Exactly how much with OE exhaust I don't know but with a real dual system like HKS or MotorDyne I'm sure it's in the neighborhood of 10 RWHP from the dyno tests I've seen here on DRIVER. SEARCH!
Gary

 

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Oh... sorry if i pissed you off gary
so what all would i need to install s techs on my car?
i have oem 19" rays and regular tires

 

right.

 

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Sweetness, nice you're the very first person that I've ever heard of that judges how an exhaust system works efficiently by the "Hand Test." The only real way to tell is by a flow tester or dyno run....!
I don't get it, why when I answer a question direct do members think I'm pissed off? If answering questions here on Driver was an aggravation I wouldn't be doing it....trust me! If you're going to install the Tein S-Techs you'll be lowering your G just over an inch front and back. To bring your alignment back to OE specs you'll need adjustable a-arms front and camber adjusters out back along with the toe bolts. The very best place to find what you need is on our MARKETPLACE under vendor suspension. If you don't have the tools to do the install find an alignment/brake shop in your area cause you'll also need a 4 wheel alignment when the job is completed....did I go GRRRR anywhere?
Gary

 

^ HAhahahahahhah, yes every noob needs to listen to Gary, trust me! I was once, and still is a noob, and I always agree with him. Kinda feels weird... But he is right, replace with HFCs, get chamber arms for your s-techs and you will be set. I am sure(kotched) you are going to replace your OEM wheels, so when you do you might need to roll you fenders, and def get spacers! gl with all of the installs and just search and you can become very enlightened!