which one to get? why? i plan to use it with stock everything else (in terms of motor/exhaust)

 

I too am intrested. I know many people have the supercat, and seeing that it is not that much more expensive that the Rx8store cat people buy it because of it's good rep. The Rx8store hi flow cat is not as popular, and no one wants to "try" it. If anyone has an Rx8store hi flow cat please post here, and how you like it.

 

I'd like to know as well.

 

I know that others on this forum have the mid pipe and seem to be happy with it, so I would assume that the high-flow cat would be good as well.

 

I have the rp supercat with the stock catback. I love it. Not too loud(my wife did not even notice when I had it installed), but I think there is a little more power mid - upper range.

 

Did your supercat develop a raspy sound after a few days?

 

the rp is a know quaility part.... there have been some issues with the sr motorsport cat...

the rx8store is an unknown....not good or bad, just it just came out and no one has put any real miles on it....

beers

 

I have the rx8store.net high flow cat and the MS Sport exhaust. I like it alot and it sounds great. You can drive quietly if you want or you can keep the rpm low and have a growling sound that is deep. If you run hard in the upper rpm's you get a louder agressive sound. Kindof a raspy sound if you lay into it that way. I can say that I do feel that the car revs up faser and there is alittle more torque.

I can get some sound clips if you want.

 

I have the rp cat with the ms exhaust and i like it. It is kinda raspy between about 3-5k and kind of annoying when i first got it. Now its either gotten less raspy or i just dont notice it because it doesnt bother me anymore. Below that its nice, deep and low. Above that its very loud, agressive and racecar-ish. I like it.

 

RP supercat on a stock exhaust is a little raspy when it's cold. Once it warms up, it sounds great. If it still sounds raspy, you probably have a leak somewhere, so check your fittings... after it cools down of course.

 

The RP supercat is more expensive, but I havent heard many opinions about any other cats

RP superact: $395 + $30 for bolt and gasket kit.

RX8store hfc: $345, I dont know if that includes the bolts and gaskets.

 

does the two have resonators on already?

 

That would be great, Thank you.

In addition, no one here should feel as though they are taking a "chance" with his products. Jason's prices are as competitive as you can get on most RX-8 parts and accessories and the quality is there if you ask the owner's of his exhausts and midpipes. I personally had the RX8Store exhaust for a couple years and it was well constructed, looked great and sounded awesome. Obligations forced me to sell unfortunately.

 

No resonator on the rx8store.net cat

 

No bolt and gaskets kit for the rx8store.net hfc. I reused what was on the stock cat and went to the hardware store for stainless steel bolts and nuts.

 

I bet those stainless steel bolts and nuts were worth $20 bucks, btw does the RP supercat come with a resonator?

 

Im going to offer our hi flow cat with a resonator built in. I will post a price tomorrow.

Jason

 

^^^
How about bolt and gasket kit? And does it come w/ a hanger?
Thanx

 

No, it does not come with a resonator, but unless you have an agressive catback already, its sweet tones are enough to make you forget you have a stereo.

 

rp will add a resonator if you want one

 

Have you got a price for the hi flow cat with a resonator built in Jason?

 

The highflow cat with resonator is $399.

Jason

 

The RP cat is a metallic cat which can handle heat better than our stock ceramic cat. I don't know what type of element the RX8store version will use, but metallic seems to be more durable.

 

The rx8store.net cat looked metallic to me when I looked down the pipe.

 

How many hp does the resonator "steal"? Anyone would like to take a guess?