Mr_Pieper

If you can get under there to look at it then I will let you polish it.

zachgt

I'm trying to decide between HKS and Race Roots single exit. I've tried to find everything I could to compare. I've read that hks is the way to go except for the noise. I know it's hard to judge on YouTube but everyone says this is one of the loudest exhausts around. Is it too loud to have on as a daily driver? I love the sound but I'm worried that the noise will be to uncomfortable for dd. the car will see the track a few times a year. Are the sounds between race roots and hks that far off?

EricB

iTrader: (7)

i like my rr, i got it when it was cheaper though before they raised the price.

it didnt touch my frame

i daily drive my car with the RB dual res midpipe. (if you are low, i suggest going with BHR, since the RB's resonators are ******* huge, ive flattened and gouged the front resonator like crazy from speed bumps/rocks, though its holding up great.)

paimon.soror

iTrader: (15)

loving my RR, especially after i put a slip in auger to tone it down a tad.

Darkproducer

i have the HKS HiPower and the AP mid pipe...i dont think its loud at all....

yomomspimp06

I have had both. Honestly, not much difference in sound. I think the true test will come down to packing materials used in the muffler. Since RR is cheaper I'm assuming it might not last as long but I'm not too sure. I can say the RR is slightly bigger in diameter. Would love to have kept the HKS but since I could sell it for premium I capitalized on the opportunity.
I can tell you now though DO NOT pair with the AP midpipe.

hoss -05

iTrader: (4)

If you are worried about how loud the exhaust will be neather are really a good choice.

reddozen

iTrader: (1)

My HKS Hi-Power isn't all that load unless I'm running a lot of engine load or high RPMs. Most Honda's in my area are louder.

zachgt

thanks for the feed back guys. I personally dont care to much how loud it is but the track i go to sometimes has a 98 db limit so i wasnt sure how close to that it was. By the reply's it seems that everyone is running with a resonator. anyone bold enough to run just a race pipe? no cat or resonator.

DMaverickRX8

iTrader: (1)

I've ran a race pipe with my custom single. It was way to loud. Can't even hold a conversation. I could hear it over the bose when cranked to maximum level.

Setre

Hello can anyone tell me the piping diameter for hks hi power ?

hoosier1104

iTrader: (2)

I think it is 3". Someone correct me if I am wrong.

EDIT: It ranges from 2 3/4" to 3 3/4".

xexok

I run the hks with an AP midpipe which technically has 2 resonators but the packing is 100% gone at this point. It is LOUD, I'm in the process of putting another resonator in the pipe to try and help because it is just too much. Since mine has all the packing gone I am probably worse off than if I had a race pipe. When I looked inside the pipe some of the perforated metal in the resonator is actually starting to break away and bend into the resonator and I have only had it for about 20-25k miles.

When I put my cat back on recently I was very surprised at the noise level. I figured the exhaust would still be somewhat loud but it was whisper quiet compared to the midpipe.

RIWWP

iTrader: (2)

At some point, it's better to just go with a resonated pipe that won't fail on you...

Setre

If its 3" it will be great for me actually, but i couldn't able to find it they always say its 55 to 75 mm .

hoss -05

iTrader: (4)

All mid pipes and exhausts will shrink down at the flanges except the Turbo XS.

paimon.soror

iTrader: (15)

https://www.rx8club.com/series-ii-te...levels-248828/

Still going strong. Will take apart the exhaust after the winter season to check the auger for wear, but so far so good on noise suppression.

xexok

Yeah but the only other option would be buying a straight pipe and having this resonator welded into that. That is the better option and I could probably even sell this midpipe to someone to buy a straight pipe.

The resonator that is falling apart slowly is the front one so I plan on replacing that, if I keep this one.

RIWWP

iTrader: (2)

Not true. I ran the BHR midpipe for nearly 60,000 miles over 3-some years through all 4 seasons and the resonator never felt apart, become raspy, etc... It bolted up right, no welding needed.

That's what I was referring to. At some point, it's just better to get a pipe that doesn't have flaws so you can stop trying to fix the flaws of all the other pipes you try.

rotarydude07

Sorry to revive an old thread, but i didn't see this combination.

I am running a RR "10CPI Catalyzer" midpipe and the HKS hi-Power. and it's loud as ****.

Although, noise and loudness is all relative. I haven't actually measure the db. (I lost my RS sound meter lol)