Center Muffler Deletion

[Barra]

Did you get rid of the split pipes too, or just the muffler?

[kink]

INAST it would be good to hear the sound from a fellow G6ET driver.

I would like to hear the sound from inside the car, as I do alot of highway driving I don't want too much drone, but also because that is the noise I will hear..

[Banned1]

no noticeable in car difference. outside there is a noticable gurgle and sounds great when booted ! cruising on highway, quiet and you wouldn't know it had been modified.

Only removed the muffler and replaced with Stainless piece. twins are to go over the rear subframe and all that other stuff.

Only complaint is it shakes the garage walls and door when car is first fired up

Edited 14/06/11 03:42 AM by rab

[CBXRT]

Excellent value and sounds better than many "sports" systems. Go for it.

I'm with Hawlass, I deleted both eventually and it still hardly drones unless around 1500 in the wrong gear (but is now properly loud as centre removed still wasn't loud enough for me personally) - either way, centre removed by itelf sounds 100% better than stock.

Definately do it.

[xtremerus]

Utes have a different exhaust to the sedan, and are longer.

Does this affect the sound, compared to the sedan sound clip.

Any-one have a ute sound clip?

[Henz]

My ute sounds nearly the same as my sedan, maybe just a little bit louder but mot alot. Doesnt drone though. And in the mornings wakes up all my neighbours.

CBXRT whats properly loud?? Got a clip, that sounds like something I might try.

[CBXRT]

Henz, to me properly loud is when you drive past 20 people on a street and they ALL turn due to the awesome note - not just 'car people'. My (only 260rwkw approx) T has the standard cat into twin 2.25 pipes - into small twin redback hotdogs at the rear - straight into standard exhaust tip. Illegal completely, but I'm in Tas so its no worries...

Its strange because my centre only removed was actually more noticeably loud on a cold start, and at cold idle, but it quietened by 30-50% when hot. Mine would be about 50% louder again above 2,500rpm when warm, but a more robust howling/raw note so it definately stands out!

[Bomber]

Can anyone explain why the exhaust splits in two anyways? Any performance benefit or noise reduction measure?

Barra I spoke to Trevor from CES specifically about this. He feels it was purely for clearance issues. Bottom line, they've proven on their dyno that the twin 2.25" merge is one of the major restrictions in the FG system. He recommended that if I wanted to keep the stock system and just go with a high flow cat, that I redo the mid in single 3.5". It was only a couple of hundred bucks to do (in mild) and is worth around 20rwkw depending on the tune. Pretty good bang for buck IMO.

[CBXRT]

Bomber, my understanding for the twin was chosen simply because it is quieter. Nothing to do with clearance - how many stock cars are sent out with 3.5inch plus exhausts??

No doubt a large single flows better and is best for performance, but stock cars are exactly that - they are quiet and inoffensive.

[Bomber]

Bomber, my understanding for the twin was chosen simply because it is quieter. Nothing to do with clearance - how many stock cars are sent out with 3.5inch plus exhausts??

No doubt a large single flows better and is best for performance, but stock cars are exactly that - they are quiet and inoffensive.

That may have been part of it as well. The removal of the middle muffler is really about noise, not power, so it seems a pretty good option for that. I'm looking at it from purely a performance point of view hence the comments about the twin mid section.