GMG or Sharkwerks bypass pipe?
Registered User
Joined: Aug 2007
Posts: 329
From: Nordschleife
Rep Power: 33
I have GMG with the vacuum unplugged. The sound is fabulous.
When the decision was made to go with GMG, it was because GMG is only about 7 miles away from where I live. I communicated with Alex and Fabryce, and it was Alex that suggested that I support my local shop. Both are true professionals and gentlemen.
You won't go wrong with either of them in my opinion. Both are quality products. The only thing is to make sure the vacuum is unplugged!
When the decision was made to go with GMG, it was because GMG is only about 7 miles away from where I live. I communicated with Alex and Fabryce, and it was Alex that suggested that I support my local shop. Both are true professionals and gentlemen.
You won't go wrong with either of them in my opinion. Both are quality products. The only thing is to make sure the vacuum is unplugged!
Registered User
Joined: Feb 2008
Posts: 138
From: Fresno, Ca.
Rep Power: 24
I have GMG with the vacuum unplugged. The sound is fabulous.
When the decision was made to go with GMG, it was because GMG is only about 7 miles away from where I live. I communicated with Alex and Fabryce, and it was Alex that suggested that I support my local shop. Both are true professionals and gentlemen.
You won't go wrong with either of them in my opinion. Both are quality products. The only thing is to make sure the vacuum is unplugged!
When the decision was made to go with GMG, it was because GMG is only about 7 miles away from where I live. I communicated with Alex and Fabryce, and it was Alex that suggested that I support my local shop. Both are true professionals and gentlemen.
You won't go wrong with either of them in my opinion. Both are quality products. The only thing is to make sure the vacuum is unplugged!
Registered User
Joined: Feb 2008
Posts: 58
From: South Carolina
Rep Power: 21
I have GMG with the vacuum unplugged. The sound is fabulous.
When the decision was made to go with GMG, it was because GMG is only about 7 miles away from where I live. I communicated with Alex and Fabryce, and it was Alex that suggested that I support my local shop. Both are true professionals and gentlemen.
You won't go wrong with either of them in my opinion. Both are quality products. The only thing is to make sure the vacuum is unplugged!
When the decision was made to go with GMG, it was because GMG is only about 7 miles away from where I live. I communicated with Alex and Fabryce, and it was Alex that suggested that I support my local shop. Both are true professionals and gentlemen.
You won't go wrong with either of them in my opinion. Both are quality products. The only thing is to make sure the vacuum is unplugged!
Registered User
Joined: Aug 2007
Posts: 329
From: Nordschleife
Rep Power: 33
Observations made by a Rennlister:
Sport off: idle - 4K RPM, the exhaust flows through all three mufflers. Above 4K RPM, the exhaust bypasses the two side mufflers and flows through the rear muffler only.
Sport on: at idle, the exhaust flows through rear muffler only. Above idle - 3K RPM, the exhaust flows through all three mufflers. Using light throttle from 3K - 4K RPM, the exhaust will continue to flow through all three mufflers. Apply moderate - heavy throttle above 3K RPM and the exhaust flows through the rear muffler only. Above 4K RPM, the exhaust flows through the rear muffler only.
Sport off/Sport on/Plug pulled: same sound over 4K RPM.
Sport off/Sport on: same sound 'just above idle' - 3K RPM.
Plug pulled: valves are open from idle - redline. The exhaust flows through rear muffler only. It is louder than either Sport-off/Sport-on in the 'above idle' - 3K RPM range. It's a purer sound.. no valves opening or closing, so no sudden changes in volume/tone. There is resonance/drone from 2K - 3K RPM, however.
Sport off: idle - 4K RPM, the exhaust flows through all three mufflers. Above 4K RPM, the exhaust bypasses the two side mufflers and flows through the rear muffler only.
Sport on: at idle, the exhaust flows through rear muffler only. Above idle - 3K RPM, the exhaust flows through all three mufflers. Using light throttle from 3K - 4K RPM, the exhaust will continue to flow through all three mufflers. Apply moderate - heavy throttle above 3K RPM and the exhaust flows through the rear muffler only. Above 4K RPM, the exhaust flows through the rear muffler only.
Sport off/Sport on/Plug pulled: same sound over 4K RPM.
Sport off/Sport on: same sound 'just above idle' - 3K RPM.
Plug pulled: valves are open from idle - redline. The exhaust flows through rear muffler only. It is louder than either Sport-off/Sport-on in the 'above idle' - 3K RPM range. It's a purer sound.. no valves opening or closing, so no sudden changes in volume/tone. There is resonance/drone from 2K - 3K RPM, however.
Registered User
Joined: Jan 2007
Posts: 1,468
From: Bay Area, CA
Rep Power: 78
if not.. i prefer rounded 100mm tips.
Registered User
Joined: Jun 2007
Posts: 100
From: Los Angeles, CA
Rep Power: 23
I have the GMG bypass and have briefly heard the Sharkwerks bypass. Can't go wrong with either one. They are very similar. The GMG bypass has bigger tips. I think it's a little louder in non-sport mode but that may be my imagination. The GMG bypass lets out a little burble when you let off the throttle that I didn't notice in the Sharkwerks but I've been told is present (thanks Old Guy). All are pretty minor differences.
Last edited by FooFighterRS4; Apr 10, 2008 at 08:46 PM.
Well we're enjoying it that's for sure on our car
We've got 2-3 local cars lined up for the 3.8 surgery this summer
We've got 2-3 local cars lined up for the 3.8 surgery this summer
Registered User
Joined: Feb 2008
Posts: 58
From: South Carolina
Rep Power: 21
Observations made by a Rennlister:
Sport off: idle - 4K RPM, the exhaust flows through all three mufflers. Above 4K RPM, the exhaust bypasses the two side mufflers and flows through the rear muffler only.
Sport on: at idle, the exhaust flows through rear muffler only. Above idle - 3K RPM, the exhaust flows through all three mufflers. Using light throttle from 3K - 4K RPM, the exhaust will continue to flow through all three mufflers. Apply moderate - heavy throttle above 3K RPM and the exhaust flows through the rear muffler only. Above 4K RPM, the exhaust flows through the rear muffler only.
Sport off/Sport on/Plug pulled: same sound over 4K RPM.
Sport off/Sport on: same sound 'just above idle' - 3K RPM.
Plug pulled: valves are open from idle - redline. The exhaust flows through rear muffler only. It is louder than either Sport-off/Sport-on in the 'above idle' - 3K RPM range. It's a purer sound.. no valves opening or closing, so no sudden changes in volume/tone. There is resonance/drone from 2K - 3K RPM, however.
Sport off: idle - 4K RPM, the exhaust flows through all three mufflers. Above 4K RPM, the exhaust bypasses the two side mufflers and flows through the rear muffler only.
Sport on: at idle, the exhaust flows through rear muffler only. Above idle - 3K RPM, the exhaust flows through all three mufflers. Using light throttle from 3K - 4K RPM, the exhaust will continue to flow through all three mufflers. Apply moderate - heavy throttle above 3K RPM and the exhaust flows through the rear muffler only. Above 4K RPM, the exhaust flows through the rear muffler only.
Sport off/Sport on/Plug pulled: same sound over 4K RPM.
Sport off/Sport on: same sound 'just above idle' - 3K RPM.
Plug pulled: valves are open from idle - redline. The exhaust flows through rear muffler only. It is louder than either Sport-off/Sport-on in the 'above idle' - 3K RPM range. It's a purer sound.. no valves opening or closing, so no sudden changes in volume/tone. There is resonance/drone from 2K - 3K RPM, however.
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