i have a cobb down pipe, test pipe, center pipe, and hks legamax exhaust system and just with the bolt on parts i made 27 hp out of it the system is not too loud but i love it i cant wait to tune it the nubers should double!!! i just would like to know what air intake to go with i am tempted to purchase the agency intake.

 

Our car was the guinea pig for HKS's complete intake, exhaust & IC system. They dynoed legymax muffler by itself and achieved 5 whp.

I believe I had posted an earlier thread on the power gain break down for each component.

It may not give you the most hp gains, but quality is top notch. Also, the sound is perfect for those who do not want to attract attention especially from the law enforcement.

John P.
Rally Innovations

 

do you have the link of the earlier thread that you mentioned about the power gains of each HKS components?

thanks!