Catback Exhaust Drone

[ER34sedan]

Hey guys,

I've recently got a R34 sedan non turbo catback. It has a 2.5" pipe, hotdog resonator after the cat, and a lukey performance muffler with 3" tip.

Problem is it has a deafening drone from 1500 - 2500rpm... sounds like a 30hz subwoofer pumping continuously.

Anyone have any tips as to how to eliminate the drone? I thought with these specs it wouldn't be so bad.

Cheers

[mad082]

Have the resonator replaced with an oval muffler.

[ER34sedan]

Would a twin tip Varex (in closed position) reduce the drone instead of changing the hotdog for a muffler?

[Ben C34]

When the varex is closed yes.

But why would you want to be able to flick a switch and make your exhaust sound shit and drone?

And it's more expensive to get a varex. Seems like a poor choice.

[fyjosh]

is it definitely a 2.5 from the cat to rear muffler?

make a Helmholtz resonator, this could potentially help reduce the drone between 1500-2500 rpm range, it won't eliminate it. nothing will 100% fix the drone other than a GOOD muffler adequately sized, which that Lukey muffler is neither.

more info:

http://www.camaro5.com/forums/showthread.php?t=102075&page=6

[Deza3000]

Just get a adjustable 15 dollar silencer off ebay. Did the job for me back in the N/A days

Or if you want the more expensive option, a middle muffler.