I created this video to document my current exhaust setup
before replacing the kinetix HFC's with Fast Intentions Resonated HFC’s.
The Stillen catback on its own sounded really good, aggressive on WOT, but quiet when driving normally.
(honestly sounds the way the car should’ve come stock)
But after spending the money on it, it just wasn’t quite as loud as I was hoping. (and I didn’t want it to be obnoxious) Unless the windows are down or music is turned way down, it’s hard to even tell it’s an aftermarket exhaust.
I decided to replaced the stock cats with Kinetix HFC’s and woah! Definitely increased the overall volume and deepened the tone of the exhaust. Slightly louder than I originally wanted, but I’ve grown to enjoy it.
Unfortunately it did add a slight bit of rasp, more noticeable when it’s colder outside or when the car hasn’t warmed up yet. Annoying enough for me to look into other options… I ended up ordering Fast Intentions Resonated HFC’s. Compared to the 200 cell count on the Kinetix, these are 300 cell count and also have 8” resonators built-in. Both of those factors will hopefully stop or at least reduce the rasp. I will make another video once those are installed for a comparison!