My birthday is coming up and i decided to scrape together the money for a cat back exhaust for my Auto IP 05 Coupe. Now my question is in terms of sound does Stillen or HKS Hi power have a more aggresive tone?? I know in terms of power gains, HKS is a little better but if im not going to feel the difference anyway, which exhaust should i get based upon sound??...I have narrowed it down to these 2 but if any1 has any other suggestions i would deeply appreciate it. I want a deeper sound than stock. Thanx to all in advance.

 

Ever since I got my '05 6MT Coupe, I have been looking to deepen the exhaust note. After I heard the HKS Hi-Power, I didn't give it a second thought. It's an excellent sounding exhaust and works perfectly for my taste. Good luck and have fun with your new exhaust when you do finally decide.

Oh, btw . . . An early "Happy Birthday!" to ya.

 

stillen has the best gains

 

I have had my Stillen exhaust for about 3 weeks now, and almost wish I had gone with the HKS. The stillen sounds very much like stock except under hard acceleration which it does have a more aggressive note but still not very loud. I almost have to roll my windows down to really hear the sound. I hear from others that it does get louder the more you drive the car. So I guess I will just have to put more miles on it to see if that is true.

 

Thanx i am leaning toward Stillen only because i would rather save a couple of hundred $ and possibly get a pulley kit. But HKS looks just amazing...decisions decisions decisions.

 

HKS baby!

 

H.k.s

 

Without question . . . . HKS Hi-Power!

 

According to stillen's website, you would only be saving $100 bucks off of our current HKS HI Power GB.. the choice is yours..

 

seriously I thought about stillen too but thanks the the group buy, i'm all over the hks!

 

as am i!!! cant wait for my hks to arrive. after hearing it and seeing it on dru's car i was sold.

 

+1 for HKS

 

Never seen a pre/post dyno of either system but the 3 highest dynos I've seen all had the HKS among other mods.