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View Full Version : Help! Exhaust Too Loud



THawkbh
08-16-2010, 10:14 AM
I just put a 'new' exhaust on my RX-7 race car this weekend and it's WAY too loud. Apart from putting in a new resonator, which I will do eventually, is there a way to quiet it down? Will a cone insert like this one http://www.summitracing.com/parts/DTC-72-32520/ work? For what its worth, I'm running a 3'' pipe.

Knestis
08-16-2010, 01:44 PM
Rotaries are unique beasts where sound is concerned, but you can start by putting an elbow on the outlet end of the pipe pointing away from sound control.

K

BruceG
08-16-2010, 02:14 PM
Perhaps a supertrap with just a few cones in it. Could never get my 12a quiet enough for track days. Saw a guy on friday at LRP(NASA track day) thaat had a 2nd gen 13b. He had 2 inlins mufflers underneath and a third muffler attached at a right angle off the rear bumper!! Must be tough to go up the back hill and get it on the trailer, too.

joeg
08-16-2010, 03:43 PM
Forget those SuperTrapp Plate reduction. You need to consult with rotary experts...assuming they can hear!

Those motors are pretty difficult to get quiet without the correct system.

racingralph
08-17-2010, 07:26 PM
get up with steve eckerich , he has one of the best exhaust systems out there for 2nd gen rx-7s. you didn't say which gen you have. isc racing has one also ,but i think mike doesn't keep any in stock. steve's type makes the most power and is really quiet. there are other rx-7 shops that offer thier verion. ralph

THawkbh
08-23-2010, 01:36 PM
how would i get in touch with steve?

seckerich
08-23-2010, 01:52 PM
PM me and I will give you my number.:D