loudest GT3 center bypass?
#1
Instructor
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Join Date: Feb 2015
Location: South Jersey
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loudest GT3 center bypass?
do we have a consensus (or at least as close to one as possible for the internet) on what the loudest center bypass is for the GT3? I feel like my 997.2 with a fabspeed unit was louder than my 991.2 is with a fabspeed unit. I have valves unhooked but it always seems like I'm always okay with going a little louder.
#2
Rennlist Member
I have tried many and the GMG was the loudest. We had them all lined up at smokies one year and it was noticeably louder. It's also the only one of the 6 or so that I've tried that got me black flagged for sound at my track.
#3
do you remember exactly which ones were there? Aside from loudest, which one sounded best to you?
#7
Rennlist Member
I think RSS and their X-pipe design sounds the best, it has this unique exotic ripping sound that is unique and spine tingling... but the tips are not great. Sharkwerks is what I am going with on my 19 RS. It is up there with the best of them in sound - close to RSS and the fact that you can use OEM or aftermarket tips makes it pretty tough to beat.
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#8
Race Director
Did not like the RSS X-pipe. Had it for 2 months and got rid of it. Felt like the engine was suffocating. Replaced it with a GRP and what a difference.
GMG and GRP the louder of the rear bypasses in my opinion
GMG and GRP the louder of the rear bypasses in my opinion
#9
Rennlist Member
Originally Posted by Jimmy-D
Did not like the RSS X-pipe. Had it for 2 months and got rid of it. Felt like the engine was suffocating. Replaced it with a GRP and what a difference.
GMG and GRP the louder of the rear bypasses in my opinion
GMG and GRP the louder of the rear bypasses in my opinion
#11
Here are a few photos of the new CMS GT3 / GT3RS exhaust along with the dyno sheet (more to follow as soon as product photos are finished). It scavenges even better than the old "infinity outlet" design which was, ahem, aesthetically controversial. Our goal is not just looks and sound (which you can get anywhere) but performance as well, which you can't get from anyone else. We're just ramping up production as it's a complex piece to make (we do everything in-house from design to fabrication to ceramic coating). But this gives you an idea of how it looks on the car. Slash cut like the OEM tips, sounds like a proper race car (which is to say awesome) designed for high-rpm scavenging.
We're offering Rennlisters a special New Years exhaust special: save $500 using code "2019EXHAUST" at checkout. You can buy one on our website here. This special ends on Jan. 20. Be sure to PM us if you have questions!
We're offering Rennlisters a special New Years exhaust special: save $500 using code "2019EXHAUST" at checkout. You can buy one on our website here. This special ends on Jan. 20. Be sure to PM us if you have questions!
#12
Three Wheelin'
Here are a few photos of the new CMS GT3 / GT3RS exhaust along with the dyno sheet (more to follow as soon as product photos are finished). It scavenges even better than the old "infinity outlet" design which was, ahem, aesthetically controversial. Our goal is not just looks and sound (which you can get anywhere) but performance as well, which you can't get from anyone else. We're just ramping up production as it's a complex piece to make (we do everything in-house from design to fabrication to ceramic coating). But this gives you an idea of how it looks on the car. Slash cut like the OEM tips, sounds like a proper race car (which is to say awesome) designed for high-rpm scavenging.
We're offering Rennlisters a special New Years exhaust special: save $500 using code "2019EXHAUST" at checkout. You can buy one on our website here. This special ends on Jan. 20. Be sure to PM us if you have questions!
We're offering Rennlisters a special New Years exhaust special: save $500 using code "2019EXHAUST" at checkout. You can buy one on our website here. This special ends on Jan. 20. Be sure to PM us if you have questions!
#13
Never seen HP gains on a center bypass only.
#15
It it is unusual that a muffler delete alone does that, but the GT3’s center exit creates a perfect situation for this design. We were surprised that others simply resorted to the straight balance tube, which is not at all ideal in terms of high-RPM flow. It’s simply a device for tuning out drone.
The main drawback to our design is that it is very difficult and time consuming to make, so it’s taken us a while to perfect. But the result is more than worth it.