No. It will likely sound even better. I run the hi power with the 63mm berk hfc. However the hfcs seem to be notorious for the catalyst material coming loose and rattling from wear and age. It sounds like a heatsheild rattle but much quieter, i've only really noticed it when revving while stopped and on some more or less aggresive upshifts between 3-6k. My hfc has only been on the car for about a year as well. Honestly its not as bad as youre probably thinking it is right now but it makes me self conscious about revving up the car when people want to hear what it sounds like.

 

if it doesnt have a raspy sound i will seriously contemplate buying one! is it a whole lot louder aswell ?

 

No it isn't raspy. It will be louder than the stock cat but by how much i'm not sure because I bought the car with it on already. When i'm a little less lazy i'll upload the vid of the rattle. Otherwise this is what it will sound like. This is a good example of when you can't hear the rattle btw.



http://www.youtube.com/watch?v=ZPz76...IBbZk4Cd1Xfh_m

 

proper

 

that sounds bloody awesome!!! i would buy one just on the basis of hearing that video!!!

 

what are the gains on the HFC normally?
i know there wont be a substantial amount, but my HKS Dual paired with a HFC, whats the hp increases on something like that ?

Cheers James

 

wtt my tp for a hfc.. hit me up if anyones interested.

 

Bump, lol.

I said i'd upload a video of the hfc rattling so here it is after a much extended period of time.

http://www.youtube.com/watch?v=x1V03...ature=youtu.be

 

Are you kidding? The tp smells so good, I think it has to be in the top 5 best smells in world. Go test pipe.

 

smells good? not when your following someone for miles on the dragon.

damn, that rattle sucks, did you contact berk?