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Tom Nicol
TryHard
Vic
JZZ30 TT

Posts: 115
Reg: 01-2006

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Wednesday, January 30, 2008 - 10:38 pm, by:  Tom Nicol (Goosemonger) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

About a year ago I got a 2.5" exhaust system put on with hi-flow 3" cat. Works beautifully, sounds great at high revs, but anything below 3000 is just a loud drone.
So naturally I'm starting to get over it, I have to drive for a couple of days straight soon and 110km/h on the highway sitting at about 2.6k revs will have my ears bleeding from the drone.

Does anyone have any suggestions for a muffler setup to achieve a medium sounding exhaust? I'd like it to have a low rumble, but nothing offending, and hopefully it will still sound decent when I sink my foot down.

Specs one more time - TT, catback 2.5" system with 3" hi-flow cat, two hotdog mufflers and I think one regular muffler half way down (although maybe not seeing how it's so loud).
It's directly replaced the stock system, so it splits from the middle into a Y shape.

Cheers!
Charlie Ters
TryHard
nsw
TT

Posts: 159
Reg: 01-2007

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Wednesday, January 30, 2008 - 10:51 pm, by:  Charlie Ters (Ul05st) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

i got a marlew (lew) exhaust installed...... its quiet down low, and awakens when needed :-)
i believe its 'ultra civilised'

speak to lew, he will help you :-)
Jose-Antonio Castillo
Goo Roo
NSW
Soarer VVTi

Posts: 1437
Reg: 07-2005

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Thursday, January 31, 2008 - 10:58 am, by:  Jose-Antonio Castillo (Ahh_soarer) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Having had a custom exhaust and a Japanese muffler system I'm an advocate for the Japanese stuff. With the factory exhaust and custom job it used to scrape all over the place but this exhaust I have at the moment is great - no drone, very quiet but still has a nice roar when you give it a boot full.

Oh, and that's with NO resonators.
Luke Burt
TryHard
Queensland
Soarer TT

Posts: 160
Reg: 08-2007

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Thursday, January 31, 2008 - 02:35 pm, by:  Luke Burt (Burt) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Not so much the pipe diameter, more the mufflers you've got on it. If you replace the two hot dog mufflers with some proper straight through ones, It would probably tone the noise down a fair amount. Ive got a 3.5inch to twin 3 inch system on mine, it has one 3.5 inch straight through, and then one 3 inch straight through on both sides at the back.. its not too bad on the highway, bit of drone..but ah i love it, it f***in screams, good deep loud note.

But yes, hotdog mufflers are basically useless for sound control.
Callum Finch
Goo Roo
WA
Soarer TT & Corolla

Posts: 3742
Reg: 09-2005

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Thursday, January 31, 2008 - 03:14 pm, by:  Callum Finch (Sigeneat) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Mine is all Jap branded so i cant give you any names, however i have 2x off centre mufflers (ie, the pipe going in is offset from the pipe leaving) on each side after the exhausts split from the cat.

In the 0 - 2000rpm range it can be a little loud and quite annoying however any higher and its sweet.
Glen Muller
TryHard
Victoria
V8 Soarer UZZ31

Posts: 134
Reg: 12-2007

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Thursday, January 31, 2008 - 04:33 pm, by:  Glen Muller (Doom_and_gloom) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I think I'm going to go Pen's direction - his sound files sound awesome... just the kind of rumble I'm looking for!
Kyle Wathen
TryHard
Vic
GTTL

Posts: 380
Reg: 02-2007

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Thursday, January 31, 2008 - 04:40 pm, by:  Kyle Wathen (Cspot) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I currently have 3” Front Pipe -> 3” Mid pipe & Cat -> Split into 2.5” -> 3” mufflers -> Cannons

Its still a bit loud so I’ll replace the cannons with 2.5” mufflers and see how that goes. If its STILL too loud I’m going to add a mid muffler/resonator just after the cat.

I also want to make it quiet at low RPM’s (driving suburban etc) but give a nice note when its coming onto full boost.

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