club.liberty.asn.au

Looking at getting exhaust & tune in the near future and trying to decide on what to get. After something with a decent note that has a nice low rumble when in low revs/cruising and a bit of a bark when you put your foot down. Don't want anything over the top that will be too loud/droney or attract the Policia.

From reading various threads and listening to sound clips i've narrowed it down to the following:

- Tcp turbo back exhaust > One clip i've found sounds perfect but unsure if it will be too loud?
- Tcp dump & mid into into stock mufflers > Stock mufflers might keep noise down a bit and look stealth, unsure if they will restrict flow or be too quiet?
- Tcp dump + stock mid + Tcp quads > Unsure if mid will restrict flow and what effect it would have on noise?

Stock mufflers are extremely restrictive. If I was you I'd go the last option. If it's too quiet you can always slap on a mid pipe

Shakibsaifi wrote:Stock mufflers are extremely restrictive.

Replacing them would be lucky to get you 5kW, or somewhere around a 3% power gain. That doesn't indicate that they're severely restrictive...

Manaz wrote:

Shakibsaifi wrote:Stock mufflers are extremely restrictive.

Replacing them would be lucky to get you 5kW, or somewhere around a 3% power gain. That doesn't indicate that they're severely restrictive...

Wasnt talking about power restriction.
Moreover Noise suppression

3" tbe with center hotdog res can be droney on cruise so going for an oval mid muff is the best solution esp if going perfoance muffs eg tcp.

invidia q300 in stock with troy from PSR are now quieter, I am getting one of these installed in 4 weeks time

I have an Invidia dump with s/s Ultrex 3" from the dump back into single tip mufflers. Once carboned up, the noise is quite moderate. No drone. Got a real rexy rumble to it. If that is too loud, I would get a hotdog resi fitted to remove more of the noise.

Shakibsaifi wrote:Stock mufflers are extremely restrictive. If I was you I'd go the last option. If it's too quiet you can always slap on a mid pipe

Apparently not a performance restriction till after 200 atw according to MSR iirc. And very quiet.

bigBADbenny wrote:

Shakibsaifi wrote:Stock mufflers are extremely restrictive. If I was you I'd go the last option. If it's too quiet you can always slap on a mid pipe

Apparently not a performance restriction till after 200 atw according to MSR iirc. And very quiet.

I'll repeat I'm talking moreover sound restrictive. Not power

i have an Invidia dump, xforce mid/y-pipe and tcp quads on my GTB
not bad when cruising but can be a bit loud when putting your foot down.

https://www.youtube.com/watch?v=SdXmjR-FcjA

Hot dog center may be a little more bearable on a sedan, sedans suppress nvh to a greater degree compared to wagons, OP didn't specify.

Thanks for the replies lads. Had a reply from garage88, moar phat dumps coming at the start of next month so that's another option.

bigBADbenny wrote:3" tbe with center hotdog res can be droney on cruise so going for an oval mid muff is the best solution esp if going perfoance muffs eg tcp.

bigBADbenny wrote:Hot dog center may be a little more bearable on a sedan, sedans suppress nvh to a greater degree compared to wagons, OP didn't specify.

Any suggestions on a mid muff? Forgot to mention it is a Sedan.

shav wrote:I have an Invidia dump with s/s Ultrex 3" from the dump back into single tip mufflers. Once carboned up, the noise is quite moderate. No drone. Got a real rexy rumble to it. If that is too loud, I would get a hotdog resi fitted to remove more of the noise.

Sounds good, any sound clips, how long did it take to carbon up?

munjai wrote:i have an Invidia dump, xforce mid/y-pipe and tcp quads on my GTB
not bad when cruising but can be a bit loud when putting your foot down.

https://www.youtube.com/watch?v=SdXmjR-FcjA

Sounds tuff mate, where did you find the xforce mid/y-pipe?

carnifex wrote:

munjai wrote:i have an Invidia dump, xforce mid/y-pipe and tcp quads on my GTB
not bad when cruising but can be a bit loud when putting your foot down.

https://www.youtube.com/watch?v=SdXmjR-FcjA

Sounds tuff mate, where did you find the xforce mid/y-pipe?

Bought the xforce mid/y pipe from bestmufflers.com, but looks like they don't sell the mid/y pipe by itself now.

Something like this preferably straight through:

http://www.bestmufflers.com/bshop/advan ... 102&y=-270

Best mufflers have been selling mid pipes again