So im going to take my cat out and just stick in a section of pipe to take that space up. So the question is can the stock muffler handle just straight piped to it???

 

i hollowed out my cats and left them there.....

that was 6 mos ago and about 3000 miles

stock exhaust is fine

Jay
1984 FB

 

I did the same, mine is holding up great... It is pretty loud though! I'd reccomend a pre silencer in place of the cat. if you want a quiet stock like sound.

 

thanks for the info...any idea of how much a resilencer would cost....student on a budget

 

80 installed at the shop I went to. I didn't get it installed but I wish I had.

 

use a borla XR-1 as a presilencer OMG best sound in the world

 

I installed a RB header/presilencer in place of the stock thermal reactor and retained the stock muffler for a year. The sound was fairly annoying and the muffler began to come apart inside. I believe the stronger exhaust pulsations that are a result of the collected header tore apart the muffler's baffles. That shouldn't happen if you are just replacing the cats with a straight pipe, but the sound quality will be poor. Without a decent muffler, rotarys with straight pipes sound somewhat like a weedwhacker coupled with an Evinrude outboard motor.

 

Lol yeah...well it might be fun just to annoy the city with that for awhile. But 80 bux.. i think i could manage to cough that up.

 

Was your muffler new or 20 years old? The baffles in the stock muffler are pretty tough. I seriously doubt a header and cat elimination would hurt them. I've got a new factory muffler from victoria british and I'm sure it will last for many years.

 

i just replaced my stock header with a Pacesetter one. I am striaight piping the whole thing then putting a high flow aftermarket exhaust on it.

i hope it sounds good. i love the rotary sound