Noise level for mazsport duel midpipe+HKS Hi Power exhaust
 

Hello,

I would like to hear some opinion from your guys with the mazsport+HKS Hi Power+turbo set up on your car. I plan on installing turbo in my car and may need to upgrade the current exhaust (Hymee+stock B pipe+ Mazsport duel) with bigger diameter exhaust. I would like to know how loud is the noise inside the car witih the HKS exhaust at city and highway speed. I know the mazsport duel will quiet the exhaust loudness significantly but the HKS Hi power is very loud. Is this a livable set up? I do not want to be mark down by cops for loud exhaust. I want 3" piping exhaust and there are very few available for RX 8.

Anyone with video would be greatly appreciated!

Thanks.

i have this exact setup, when it was n/a noise levels at fwy speeds where very quiet no drowning noise and not high pitched, city streets still quiet enough where its not anoying and i felt comfortable enough to drive in front of cops, with the turbo installed just brought the noise level even further down i would say comparable to a mild exhaust system with a cat
hope this helps....btw without the mazsport mid pipe the hks hi power is one the loudest exhaust available for the rx8 in everyway **mazsport mid pipe was a night and day difference in noise levels**

Thanks Gregs. Currently I have hymee exhaust which use existing stock B pipe and Mazsport duel pipe. I really like this set up for sound as it is not loud and sound nice outside and inside the car. However, I do not know if this set up is adequate for turbo charged application. I will be running Esmeril Turbo. From your experience, would an increase of 2.5"(is that what the stock B pipe dia is?) to 2.97" exhaust piping (HKS) help with reducing back pressure? If it is not worth doing it then I would keep my set up that I have. My friend told me to keep the set up that I have and only change it later if I don't like it. In my mind I want to get the set up right first time so I want others opinion also. Bigger exhaust let the turbo spool up quicker and I want that. What is your thought?

Thanks.

I was amazed on the difference in loudness between my stock CAT and putting on the Mazsport Dual Resonated Midpipe.. there was BARELY any increase at ALL~!

These 2 resonators are freaking huge so they are definitely doing their job.

I have mine paired with a Borla catback.

^ sounds good

wow, really? can you tell the increase in sound?

Im currently running no mufflers, just the dual mid pipe from mazsport. Super quiet, just sounds like the mazdaspeed exhaust upgrade.. then again, i doo have a turbo which does muffle the exhaust.

^ woaah it must really smell with just the mid pipe haha.