HKS HiPower!
Yes, but it's really not that necessary. I recently put my HKS single on with a high flow cat as well. Yes it's loud, but it's not a bad loud and it doesn't bother me. It's a good deep sound and at low throttle and normal cruising it's incredibly tolerable. It gets pretty loud at redline, though, but it's not horrible.

I had the rx8store dual can catback before with a resonated/catless midpipe. It was actually louder in the lower/cruising rpm's than the HKS single + supercat. In the high rpm's its about the same, but the HKS is deeper and sounds better in my opinion.
what i meant by will it fit is on the car is there enough space where the connecting pipe is to also accommodate a resonator or small muffler?
do you plan to take some vids or sound clips? ive seen a few on youtube and it seemed too loud for me.
do you plan to take some vids or sound clips? ive seen a few on youtube and it seemed too loud for me.
Pretty sure he's talking about once it's mounted ON the car, is there space between it and the bottom of the car and around the pipe to put in a resonator or small muffler. It all changes once the pipe is actually bolted on the car, it's tight in some places but I think it can be done if the resonator is short/skinny.
Pretty sure he's talking about once it's mounted ON the car, is there space between it and the bottom of the car and around the pipe to put in a resonator or small muffler. It all changes once the pipe is actually bolted on the car, it's tight in some places but I think it can be done if the resonator is short/skinny.
notice the 2 in line mufflers here
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