Ok a couple of years ago my cousin got out of jail and wanted to go straight to the track and run so he found and bought a yellow 79 rx7 that was stripped and roll caged. I think the previous owner used it for autocross or club racing cause he had some panasports that stuck out a little....ANYWAYS to get to the point. for the exhuast he had a RB header and straight pipe exhuast until what seemed like a bike muffler, but I think it is really one of those tunable mufflers......Anyways to get to the real point.....this thing was ******* quite as hell for a straight through rotary. I mean It only had one of those low V8 rumbles at idle and even at WOT it still sounded low, kind of like a 4cyl with a just a catback, nice and mellow. I want to know if any has seen this setup before cause I really want to try and do it. Let me know

 

supertrapp

 

Yeah, Supertrapp makes mufflers for bikes, cars, whatever. Anyway they have plates you can put in to tune the muffler. I have one on one of my bikes .

~T.J.

PS - www.supertrapp.com

 

It looked like this one but it was all black

 

yeah exactly it had those.

Anybody ever see one on a rotary?....besides me.

 

yea all the time at scca races..

 

where they quite....for a rotary anyways.

 

OK was my cousins car a freak of nature cause Ive been searching for info on the supertrapps and everybody says there loud. whats up with that?

 

My friend has one on his RX2 with a street ported 12A Racing Beat header,RB/Holley Intake..

Its sounds sweet,Its a little diffrent though,Yes you can buy caps I think pending how you want it set up to be ..low end torque,Top end power..etc.etc

 

His muffler had no caps at all and it still sounded low. I dont know, maybe my definition of loud and quiet are diferent from other people.

 

spec7 guys use those straight through mufflers to cut down on the db, since most tracks have db limits... they pose the least amount of exhaust restriction possible in order to keep the noise down.. but they are still usually fairly loud..
(or maybe i am thinking about a different type of muffler.. either way something is not right)

 

A guy I aotu-x with has a supertrapp, with like only 3 disks on it. one of the loudest rotarys Ihave ever heard.
But He throws like 6 disks on it for the street, makes it very manageble...

 

Some tracks we run with our GT1 car have a very low db limit. So we put super trap end pecies in our exhuast. And if you add plates the quieter the car, with less plates it's louder.

 

I went to a racing school last year and they required mufflers on rotaries, apparently the guy who was running it was racing and an RX-2 passed him and didn't have a muffler, the guy almost crashed and got a crazy headache.

 

...the more discs you put in, the louder it gets.

 

Their automotive (car) applications look and sound kinda cool.... expensive though...

 

DOH!!! I'm retarted lol I knew that I just flipped it around for some retarted reason I'm even the guy who adjust the exhuast when we blow sound. I need to work on the racecar I'm going through withdrawl...