Rotary78

sup guys, i already have a Cat-Back exhaust system, but i'm looking into getting more HP from the exhaust... I was going to invest in either a Mid-pipe or a High Flow Cat... If anyone can help me out and tell me which is worth buying, whether it be because of more power/noise etc.. thanks

NoTears316

My SR cat crapped out on me after about 20k miles. Installing RP Supercat tomorrow morning.

Fanman

I have the RP Supercat unit on my car right now. Had the SR unit before. Both very nice units. With midpipe you get slightly more hp (though the RP Supercat gave midpipe level hp gains), more sound if that is your thing. You have a large chance of getting the check engine light, and you are polluting the environment more. The hi-flow cat units act to slightly curb sound a bit (catalytic acts as a resonator), & you can still pass emissions.

yiksing

Hi-flow cat if you wanna pass emission, Straight pipe if you don't mind the drone. Gutting the cat is the worst thing to do.

Rotary78

yeah i do want to pass emissions, but i want a little more HP if i can get it and a good sounding note from the High Flow or Mid.... we'll see... thanks for all the replies...

NoTears316

The RP Supercat is now installed on my 8. It sounds a lot louder than the SR.

Fanman

From your criteria, go for the RP Supercat then.

Moostafa29

RP Supercat is very good. You should be happy with it.

Rotary78

wheres a good place i can get one? for a good price that is.....

Moostafa29

check the for sale section. there may be some deals going on.

swoope

iTrader: (5)

here you go.

http://rx7.com/store/rx8/rx8exhaust.html#supercat

beers

Rotary78

thanks bro, maybe i'll buy you a beer on me

miraclewhip

i love my b&b catless midpipe great sound and hp increase....can really feel the power...will most likely swap it out when it come to the next inspection wich is a year from now..i'd say so far its woth the time to do the swa once a year

miraclewhip

o and by the way the b&b is the cheapest of all your options

NoTears316

Since he already said he needs to pass emissions, the catless is out of the question.

jaedcem

Say, if I want to put this on my bone-stock system, do I need to buy the "Bolt and Gasket kit" too? I think I would want this, to avoid an exhaust leak.

Thanks.

rx8wannahave

^What he said...AND, what are the gains people have seen with the RP SuperCat?

$395 does not sound too bad at all and IS there a sound clip some place? I don't mind a sexyER and higher sound, but I wouldn't want it to be come annoying on a long trip.

"Search"...I know I know, I'm just being lazy and thought I'd ask a $5 question and await a $5 response.

lol

IZoomZoomI

I read that the rp cat made an oem exhaust sound buzzy at some rpms. I guess the sound really depends on what exhaust you are matching it to. I think it sounds great with the racing beat exhaust and greddy (which was pretty loud)

NoTears316

Its worth getting the kit for the gasket. Also, I have the SR exhaust still and the RP is considerably louder than the SR midpipe (borderline straightpipe noise). I have been asked a couple times already from friends if I was running a straight pipe. I'm sure it had something to do with the SR cat falling apart and restricting airflow, but my 8 "feels" faster with the RP on now.

TeamRX8

iTrader: (25)

Use three 7/16" x 1.5" long stainless bolts with nuts and lockwashers for attaching it to the exhaust manifold

I'd recommend replacing the ring gasket between the midpipe and the exhaust manifold anytime it is taken apart

7MANNY7

Dual Resonated Midpipe
on maxsport.net
says you get the hp of mid pipe without being so loud.

7MANNY7

Mazsport....