How do you guys keep your street ports quite?!!! I recently got my 86n/a rebuilt and ported. with the diffusers cut out and the exhaust cleaned up. I'm having trouble toning this thing down. well my exhaust is: RB collected header, 2.5in Raptor muffler right after the header, Custom Y pipe after the raptor. Y pipe is 2.5in with 2 glass packs on the back. Now i know you will all say hey get rid of the glass packs. . that's not the problem It was fairly quite like that. then the Raptor must have blow out on the inside. There are no leaks but i can hear it like no other right where the raptor is. It's acting like a ressonator or something now. . Is there any muffler that can handle the heat of the rotary? If i was to put a High flow Cat in where the raptor is would that quite it down? What setups do you guys run with your street ports? Any info would be great. i havn't been stopped by the cops yet but i'm sure in due time I wont get the clutch in on time or have one behind me at a light or something. Please help!
thanks
Dom

 

Run off-set, straight-through mufflers.
Place one of them at LEAST where the stock main cat is.
These mufflers are offered by Walker Dynomax UltraFLO, Borla, and Magnaflow.


-Ted

 

and Flowmaster

 

BTW: its quiet not "quite"

 

yea the raptors are offset, It sounded good until it blew out. I guess that's what i get for buying a 20 doller muffler. . lol Do you guys think that one of those higher quality offset mufflers would tone her down a bit? I hope so. this thing is loud! How about a high flow cat? anymore info would be great. Thanks
Dom

 

a high flow cat would quiet it down more than any muffler would but there is a tradeoff, you would be losing flow hence less power.

 

Flowmaster uses acoustic baffles to try and tone the sound down.
They sound like crap on a 13B, IMO.


-Ted

 

if you use a high flow cat, or a cat in general, will the air pump have to be reconnected?