I searched and found a couple of threads suggesting double resonators in an exhaust system, but the only one that said he actually did it, CW-ITR-329 (Ryan), went back to stock exhaust. I think this sounds like a good idea, and I'd like to hear from anyone else who has done it.

I have a 98 ITR with a jrsc at 8 psi. I've already got a kamikaze header with the 2.5" collector, but I need to decide on the rest of the exhaust system before I get it installed. I'm definitely going 2.5" all the way, but I need to keep it as quiet as possible. Any suggestions would be appreciated.

 

From some of the older posts I've read, I think you can go with a pretty long Magnaflow (part no. 10436) that is a 22" long resonator that should keep things pretty quiet, that's what I'm planning to use.

The Magnaflow resonators are pretty expensive however compared to the Dynomax Magnum, check it out, pretty cheap from Jegs.

http://www.jegs.com/cgi-bin/ncommerc...78&prmenbr=361

 

I ran a resonated test pipe in front of the resonator on the A'pexi WS exhaust on my NA teg. I loved the sound of it and when I put the cat back on(weld rusted) it just killed the performance of the car.