Does the RP supercat makes the exhaust really loud from the inside? I mean i have Greddy sp2 exhaust already.. and i dont wish to have any louder than the way it is... can anyone confirm for me?

Will it at least increase hp by a little?

is it worth the money?

and does it pass the state law?

thanks!

-Jordan

 

Dont buy it, it does not meet your first requirement. It is LOUD AS ****.

You can ask the good people over at the FLRX8CLUB forums, as they heard it at the last tampa meet. With aftermarket exhaust it is very loud. The person following me to the meet got in front of me on the highway as it was too loud for them. Overall, I think it sounds beautiful and I cannot get enough of it. RP dyno'd it and saw an increase of something like 9-10 whp. If you are looking for a "major horsepower upgrade" I would keep saving though and go FI. A high flow cat does not fit into this category.

Please keep in mind though, at idle or w/ cruise control at low RPMs or low throttle, there will not be much of a sound difference. But as with all exhaust mods that allow more flow, throttle = louder.

 

loud is all relative. i drove a catless, ported 8, and you couldn't hear the motor on the freeway with the windows down unless you were on the gas hard. and even then, it was barely enough to let you know what the motor was doing. side ports are quiet.

 

supercat is loud, you can totally hear it inside the car.

 

Super koud, when I had mine on it sounded like straight race car. My friend who drove behind me one day said it was so loud he could literally feel the noise.

 

will it pass emission?

 

it will pass emissions, but if the greddy sp2 is already too loud, then rp supercat is outta the question. it will roar and hurt your ear. lol

 

It makes my ear feel goooood

 

maybe you guys are just use to rally quiet cars, but rx8's don't make any noise.

listen to a pp motor piped, spinning 9000+ rpm, THAT'S NOISE!!!

 

try sitting in an sti with straight pipe. you can't breathe when the car is WOT accelerating.

my only complaint about a straight pipe is that it makes the rx8 sound like... it's farting!! especially in low rpm range & in stop & go situations.

 

Sorry, I had a bridge ported 1st gen w/ a 13 B / Racing beat headers to straight 3" piping to a magnaflow ... also had RB intake manifold and holly 4 barrel carb - would rev up to 12-13 K and shot flames idling

I know what loud cars sound like !

 

Mine's loud with the Racing Beat REV8 dual. I might weld in a resonator to quiet it down a bit.

 

I know someone with a 300 hp 13B NA race engine that's pretty quiet, it has two long inline lava rock mufflers on it

 

did you read his posts? he's asking if the supercat will make his car louder than it already is. simple answer is... yes.

 

mine way a bunch louser at first with my stock exhaust system, but it mellowed out alot over time (at least i think so -shrug-)

 

RP cat + stock exhaust = not too loud

RP cat + aftermarket exhaust = angry bumble bees on steroids but it sounds goooooooooood

Had some guy with a V8 mustang with a mean exhaust say my car sounded mean and liked it very much.

 

no one has a sound clip? hmm....

 

I' ve just ordered a RP supercat and a RB exhaust... I'm starting to get worried about the noiselevels I think my car is to quiet now with standard exhaust, but I really do not want e really loud car...

 

You'll be fine with that combo.

 

i have the rp supercat w/ rb exhaust. i love it

 

what is this thread doing in the major hp upgrade section?

 

8 hp is major?

 

Thanks guys

 

So is the RP supercat with RB exhaust noticeably and definately louder than the RB exhaust by itself?

Does the RB exhaust lose its deep tone with the RP supercat installed?

 

yes it is noticeably louder than just the RB exhaust. it still has the deep tone, but with more rumble to it. you will be heard going through neighborhoods. listen to nemesis's video clip of the rp+rb if you want to get a feel for it. I'm in the process of doing a video clip as well as soon as i get some time.