Help me quiet this thing down.

[boostedh23a1]

Hey guys I have a RB26DETT in my S30 240z. I have a vibrate 18" resonator and a Megan turbo muffler. All done in 409 16 gauge stainless. It sounds good but is a bit loud for me below 4k rpm. Clearance is a mother with this swap and the R230 rear end.

[Yellow4g63]

add the unltra quiet one into the mix. Had great success with those on N/A cars that didn't have a cat.

[boostedh23a1]

Willnt fit. Everything is way to tight in this chassis.

[Shocker]

Pics of car? How slammed are you?

[boostedh23a1]

well i took some pictures but it was in the air on the rack so i dont think it will be of any help. Currently the exhaust is about 1 inch off the ground. i can move it up maybe 1/2 inch when i put the final touches on it. (Just got the driveline vibrations out and didnt wanna weld up the exhaust until that was done).

[gawdzilla]

if you want it quieter you'll need something with a decent chamber. magnaflow makes some nice oval straight through mufflers that have a good sized chamber that don't add too much height. Try replacing that 18" resonator with a chambered muffler because I can tell you the resonator isn't doing much for noise.

I cant tell from the pic, but if you're running 3", try this: http://www.summitracing.com/parts/MPE-11219/ That's what I'm running on my car and it sounds great. The height is only 4" so the muffler is pretty flat. If you're 4" piping all the way, that's a little tougher.

Here's a 4" "race muffler" that magnaflow makes: http://www.summitracing.com/parts/MPE-14153/. Probably louder than the one above, but overall height is only 5".

edit: If you have the 3" vibrant resonator, it's already 4" on the outside. If you have the 4" vibrant resonator, it's already 5". So i'd def replace that with one of the magnaflows I linked above. Both of them at least have a chamber to eat up noise without hurting flow too much. It won't add any height to your exhaust, just some width. And it looks like you have room on the sides for a chamber.

[boostedh23a1]

yea i was looking at this one http://www.summitracing.com/parts/MPE-11259/ which is the same thing with offset and center. I need to go below my transmount so i was thinking i might can use the offset on this side then the other side can go to the pipe. it would have to be installed vertically to clear the driveshaft. Im gonna break out some cardboard and see what i can fit.