ChinkyChoy

iTrader: (2)

i though my ARK was pretty loud especially now in the winter lol

I am second guessing myself now and whether I want to install the FI RHFC but I heard that it doesn't make it louder just deeper which is what I want

AroundTheG37

iTrader: (8)

I like loud though so I have to live with some of the rasp unless there are better options (which I have yet to find).

KiloneG37s

Edit: just seen this was 4 months old. Sorry, but still a possible solution.

If you're not thrilled with getting an exhaust you can always start piece by piece and see if a particular component eliminates the rasp. Start with the y pipe, then x, then add a axle back like Tanabe if it makes it that far.

I have a feeling just an aftermarket y pipe connecting straight to the cats might to the trick. I seen one for sale right now on the classifieds.

James Harden

iTrader: (1)

Sorry for the extreme bump, but OP, did you ever solve the rasp issue? Did you add any components?

I have a Tanabe Medalion and I have been looking to add these but came across this review and it worries me that I could have that same issue.

Mattlorentzoe

iTrader: (4)

I've had z1 hfc for year and half now and yes there ALOT of hissing. Doesn't bother me to much. Now on to the rasp. I can't blame the hfc for all the rasp (headers added some, and I feel like the top speed exhaust did also.) The rasp is mostly from what I can tell at lower rpm. Haven't had the FI rhfc or the rtp but that will be what I switch to if I do switch.

ZahyMatar

iTrader: (4)

I have the Tanabe and Berks HFC... Sounds similar to the Z1 HFC. It's an okay setup, not loud enough for my taste, and with the HFC, the stock piping struggles to pass the exhaust gasses through.

370gt_alej

I'm about to have some pros install my z1 hfcs but they are the 100 cpsi ones. I do already have some Vibrant 12" resonators and the rest of my exhaust is stock. Wish me luck. I'll upload a video to YouTube when I can!

ANMVQ

iTrader: (13)

^^ I have those as well, I really like them, Lots of HISS tho