4.0 exhaust options and sound
#18
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a sharkwerks bi-pass will provide you with a nice clean lightweight center muffler delete.
the two remaining side mufflers will allow you to maintain sport button.
keep your factory center muffler when you go to sell the car some day.......
the two remaining side mufflers will allow you to maintain sport button.
keep your factory center muffler when you go to sell the car some day.......
#19
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I would urge you to wait and see how it sounds OE. You might be pleasantly surprised. I was considering a full Akropovic but have changed my mind after driving it. It is pretty loud in Sport mode.
#20
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#21
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Lets compare apples to apples
The stock GT3RS system is the same as the 3.8RS system and it works fine
For those of you who want improved sound and performance we have a proper solution
GMG WC header and cat section- direct bolt on replacement system no modifications.
Complete before and after Dyno tests coming as soon as the 4.0 arrives... Already a proven improvement on the 3.8RS.
GMG WC sport center section a properly engineered and functional center section not just a muffler bypass. Also a proven part in competition on the World Challenge GT cars..
This is not a simple muffler delete that divorces left and right cylinder bank but a engineered center section that retains the right amount of back pressure the engine needs and provides the same charectoristics that the stock secondary muffler does. Sound is further enhanced by the built in megaphone design which goes from 3" to 3.5" tips.
** Bumper removal is NOT required to install the GMG WC center section.
What ever you decide to do leave the stock mufflers as they are and do not replace them after testing and testing and more testing of various configurations we have found that the stock mufflers work best on these cars.
Pics and links below:
![](http://i729.photobucket.com/albums/ww291/gmgfabryce/Gt2rs/picture065.jpg)
Shown on a 3.8 GT3
![](http://i729.photobucket.com/albums/ww291/gmgfabryce/willgt3rs2011jpeg25.jpg)
Shown on a 3.8GT3RS
Link for the header info:
http://www.gmgracing.com/porsche_exh...72header.shtml
![](http://www.gmgracing.com/products/porsche/exhaust/9972header/1.jpg)
Same system and design on the World Challenge race cars..........
![](http://i729.photobucket.com/albums/ww291/gmgfabryce/Gt2rs/picture357.jpg)
![](http://i729.photobucket.com/albums/ww291/gmgfabryce/Gt2rs/picture365.jpg)
The stock GT3RS system is the same as the 3.8RS system and it works fine
For those of you who want improved sound and performance we have a proper solution
GMG WC header and cat section- direct bolt on replacement system no modifications.
Complete before and after Dyno tests coming as soon as the 4.0 arrives... Already a proven improvement on the 3.8RS.
GMG WC sport center section a properly engineered and functional center section not just a muffler bypass. Also a proven part in competition on the World Challenge GT cars..
This is not a simple muffler delete that divorces left and right cylinder bank but a engineered center section that retains the right amount of back pressure the engine needs and provides the same charectoristics that the stock secondary muffler does. Sound is further enhanced by the built in megaphone design which goes from 3" to 3.5" tips.
** Bumper removal is NOT required to install the GMG WC center section.
What ever you decide to do leave the stock mufflers as they are and do not replace them after testing and testing and more testing of various configurations we have found that the stock mufflers work best on these cars.
Pics and links below:
![](http://i729.photobucket.com/albums/ww291/gmgfabryce/Gt2rs/picture065.jpg)
Shown on a 3.8 GT3
![](http://i729.photobucket.com/albums/ww291/gmgfabryce/willgt3rs2011jpeg25.jpg)
Shown on a 3.8GT3RS
Link for the header info:
http://www.gmgracing.com/porsche_exh...72header.shtml
![](http://www.gmgracing.com/products/porsche/exhaust/9972header/1.jpg)
Same system and design on the World Challenge race cars..........
![](http://i729.photobucket.com/albums/ww291/gmgfabryce/Gt2rs/picture357.jpg)
![](http://i729.photobucket.com/albums/ww291/gmgfabryce/Gt2rs/picture365.jpg)
![](http://i729.photobucket.com/albums/ww291/gmgfabryce/Gt2rs/picture362.jpg)
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sales@gmgracing.com
www.gmgracing.com
714.432.1582
facebook l instagram l youtube l twitter
Porsche | Audi | Ferrari | Lamborghini | McLaren
Performance Tuning | Motorsport | Factory Service
Pirelli World Challege Race Team GT/GTA/GTS/TC
Pirelli GT3 Cup Trophy USA
Porsche Motorsport — Audi Sport Customer Racing — Lamborghini Super Trofeo Series
#22
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GMG WC sport center section a properly engineered and functional center section not just a muffler bypass. Also a proven part in competition on the World Challenge GT cars..
This is not a simple muffler delete that divorces left and right cylinder bank but a engineered center section that retains the right amount of back pressure the engine needs and provides the same charectoristics that the stock secondary muffler does. Sound is further enhanced by the built in megaphone design which goes from 3" to 3.5" tips.
This is not a simple muffler delete that divorces left and right cylinder bank but a engineered center section that retains the right amount of back pressure the engine needs and provides the same charectoristics that the stock secondary muffler does. Sound is further enhanced by the built in megaphone design which goes from 3" to 3.5" tips.
Thanks.