Gundo Hack "REVERSE"?
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Gundo Hack "REVERSE"?
Can a Gundo hack "Muffler Bypass" be reversed? if I get the Gundo hack and later down the line I want to put back to stock can this be done?
Thanks in advance,
Steve
Thanks in advance,
Steve
Thread Starter
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Joined: Aug 2012
Posts: 139
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From: So.California
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From: Nashville, TN
No droning brother. You'll love it. If you have 997.2 you'll want to bypass the rear muffler as well.
You're right about the PSE. There is the same type bypass pipe with a vacuum actuated valve. Push the PSE button and the valve opens allowing the bypass. Fister uses a 1.75" bypass pipe which may be bigger than the PSE bypass. Take a look at this link for more information: https://rennlist.com/forums/997-foru...undo-hack.html
"Wack without the Hack"
You're right about the PSE. There is the same type bypass pipe with a vacuum actuated valve. Push the PSE button and the valve opens allowing the bypass. Fister uses a 1.75" bypass pipe which may be bigger than the PSE bypass. Take a look at this link for more information: https://rennlist.com/forums/997-foru...undo-hack.html
"Wack without the Hack"
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997.1's - do the hack for better (louder) sound - these cars only have the two side cans.
997.2's - replace the center silencer with the X pipe - I'm not aware of anyone hacking the side cans, too, but you could. Usually, getting rid of the center silencer satisfies most folks. These cars have 3 mufflers - the center silencer, and the side cans.
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Joined: Aug 2010
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From: Central North Carolina
2 different animals depending on cars.
997.1's - do the hack for better (louder) sound - these cars only have the two side cans.
997.2's - replace the center silencer with the X pipe - I'm not aware of anyone hacking the side cans, too, but you could. Usually, getting rid of the center silencer satisfies most folks. These cars have 3 mufflers - the center silencer, and the side cans.
997.1's - do the hack for better (louder) sound - these cars only have the two side cans.
997.2's - replace the center silencer with the X pipe - I'm not aware of anyone hacking the side cans, too, but you could. Usually, getting rid of the center silencer satisfies most folks. These cars have 3 mufflers - the center silencer, and the side cans.
I installed the crossover pipes first and did not hear much difference in the sound. When I added the Gundo Hack the sound really woke up. I get compliments all the time on how good the car sounds. There is absolutely no interior drone at any RPM.
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Check your data. The side cans are the mufflers that are modified with the Gundo Hack. I don't recommend the x pipe. The x pipe has a tendency to sound good but it kills low end torque (according to either Sharkwerks or AWE, can't remember which) while the crossover pipes provide a slightly different sound but do not affect low end torque. The stock center muffler has two sharp internal bends in the flow path. The crossover pipes eliminate this and provide a straighter pathway for the exhaust to travel.
I installed the crossover pipes first and did not hear much difference in the sound. When I added the Gundo Hack the sound really woke up. I get compliments all the time on how good the car sounds. There is absolutely no interior drone at any RPM.
I installed the crossover pipes first and did not hear much difference in the sound. When I added the Gundo Hack the sound really woke up. I get compliments all the time on how good the car sounds. There is absolutely no interior drone at any RPM.
Here is a pic of my Tubi exhaust, where you can see the crossover/x-pipes that eliminates the center silencer on 997.2's. You can also see the side cans that were also replaced with the Tubi cans.
