Just bought the full catback HKS exhaust and I forgot to put the donut gasket do I really need it? I didn't hear no exhaust leak.
I seen a video with another guy looked like they didn't put it on either. I still can't send the videoI think you should be okay, put it on when you have time for piece of mind. If it's not leaking though I think you should be fine. DM it to me if you have a video lol
Sounds pretty good. low rumble when started, a lot lower sounding than stock. WOT is pretty loud but I am running the Buddy Club header, along with the Buddy Club test pipe modified with Random technology HFC installed. Originally I was using CT-E header, Random Technology down pipe and HKS. Big difference in soundHow do you like it? I originally wanted the full race, but I'm deciding to get the thermal when I can afford it. Open to other options though.