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Hello,

I've brought this up before with no solution, just wanted to try again. I've got a 2.5" catback exhaust with 2 resonators. There is a tiny muffler on the end of the exhaust,

my problem is that it still drones. Is it even possible to get a RB25de to have a clear sound without drone at all?

What are some people running on their Catback systems?

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https://www.sau.com.au/forums/topic/411374-exhaust-sound-issue/
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its the tiny muffler thats the issue, get a semi straight thru one,

my system has a hotdog resonator and a big oval muffler, the muffler is what muffles the drone the most, get a muffler thats semi striaight thru, so it curves inside, that will forces the gases to be muffled but not restricted , then your drone will come down ..

you need a either a large oval muffler or resonator .. police come straight after noisey cars..

Edited by SliverS2

are they hotdog resonators? thats odd because i have a 4L falcon with nothing but a large muffler on the back, and hardly any drone, sounds meaty actually. lol

Edited by SliverS2

doesnt look like much of a resonator, looks no better than a straight piece of pipe,

if it were me id have the big fat muffler on the back and an oval resonator, or id start there

WMDC5 is probably right, theres alot of honda's that sound like that,

a 2inch pipe size was probably better for the low power output too.

GL

hard to believe a good resonator and muffler wouldnt sound good without the drone, but i dont have an na, i know when i had a hotdog resonator with a cannon my car was extremely droning, i mean you got a headache after 5minutes

IMO whenever I have had just resonators that makes it drone. On my old motor na rb20 I had two hotdog style resonators sounded really nice under load but cruising it would be almost as loud and drone like crazy. Then I had the rear one replaced with an oval one and got rid of the drone almost completely, but made it sound not as good under load. Its a compromise really.

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