I have an 03 coupe with the hks true dual exhaust and i need some input on which way i should go...High flow or just go stright back and delete them all together....Any input is appreciated...Thank You

 

HFC FTW, Test Pipes smell,

 

I couldn't be happier with my FI metallic cats and HKS catback.

 

After having High Flow Cats, Test Pipes and stock cats back on again...

Ill take the stock cats... The small HP gain isnt worth the added sound... IMHO

 

I really enjoy my Headers/TP/XO2 but I agree with Jason, it really can get old. Especially since it has gotten bitterly cold in NC the past 2 weeks, it adds to the drone.

When it's warm outside, pure sex

 

HFC FTW IMO. (three acronyms for the record! )

 

I used to get in the car with my girlfriend and say, "talk to you when we get there..."

 

Wow that's crazy. was that with test pipes or HFCs?

 

Is that bad?!?!!?

 

High Flows!!!!

 

Test pipes. they smell and sound sexy. I love the smell, sounds like pure performance, and they arent THAT loud.

 

high flow cats...the stock cats weigh like 30lbs so its almost like weight reduction lol

 

The only way I would run TP's or HFC is with a twin turbo kit to quiet them down. I tried HFC's on my car when it had the SC and it was a lot louder which I didn't like. I was shocked to see when we did my TT kit with TP's it was just as quiet as before with the oem cats.

 

really? how much do most aftermarket cats weigh?