Jus

Hello, I’m looking into purchasing the HKS Hi Power for my FD. For the people who have the exhaust how is the sound while cruising and highway driving?

DaleClark

iTrader: (55)

It's a nice exhaust - fits good, good sound and well built. It's middle of the road as far as sound - not crazy loud, not super quiet.

If you still have a stock main cat most any exhaust isn't super loud. Once you replace that is when things get REAL loud.

I think you'd be happy with it.

Dale

Jus

Well I’m planning on going Hks downpipe and resonated midpipe in the future. Would these make it really loud where I couldn’t hear while cruising or highway driving ?

quichedem

iTrader: (4)

Seems like you're more concerned with sound. Maybe look into something more quiet, and definitely get the resonated midpipe if you go this route, Mine is on an un-restricted downpipe and midpipe because race car. It's moderately loud at mid-range, and really gets noisy as revs increase. Pretty good at idle / stop lights, though.

IRPerformance

iTrader: (41)

My advice is to look for some youtube sound clips or find another rx-7 owner with that exhaust. Those should help you make your decision.

yurcivicsux

buy an exhaust with a db rating like the one i have, i love it. loud exhausts are lame.
https://www.croooober.com/en/item/cp...AZDA-RX-7-FD3S

DaleClark

iTrader: (55)

^ I had one of those Kakimoto mufflers once, that's a nice exhaust.

The quieter the exhaust is, the more it can impact performance. When you start making bigger numbers the more free-flowing the better, it's always a trade off. I think I saw a single turbo FD lose like 50hp with a Racing Beat dual tip. That's not a bad exhaust, but at a certain power level it was too much restriction.

Dale