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When I was a kid, I used to get noise by using clothes pins to attach baseball cards to the spokes of my bike (yeah, I'm old ) and make it sound like a motorcycle
Mike, you may have lost a few with 'clothes pins'. BTW, the spring loaded ones were a big upgrade.
I look forward to the day you break down and put some aftermarket side delete exhaust on. It truly does bring the car to a different level, admitidly I was shocked how much more intense my experience is driving my car after just putting on the side fvd j pipes.
Even just for a few days Mike, it would be worth giving them a shot to see what all the fuss is about
I should never say never....
Originally Posted by Alan C.
Mike, you may have lost a few with 'clothes pins'. BTW, the spring loaded ones were a big upgrade.
The 997.2 rs mufflers crack bad and fast. The steel ones last. Cup steel is same as steel with hole blocked and welded tips.
You have to see the inside of these to see how they work. You really only want exhaust flow in the lower hole at speed. The top hole goes through extra baffles.
If the bypass pipes with valves divert to the lower hole at speed they should be fine. Bypass pipes that divert to both top and bottom center holes th no valves I would not use. You will not get better flow and you're stressing the muffler baffles.
Side deletes have benefit of heat weight and sound.
Anyway this is cheap to try. candidly I'd only do this if you track a lot.
The 997.2 rs mufflers crack bad and fast. The steel ones last. Cup steel is same as steel with hole blocked and welded tips.
You have to see the inside of these to see how they work. You really only want exhaust flow in the lower hole at speed. The top hole goes through extra baffles.
If the bypass pipes with valves divert to the lower hole at speed they should be fine. Bypass pipes that divert to both top and bottom center holes th no valves I would not use. You will not get better flow and you're stressing the muffler baffles.
Side deletes have benefit of heat weight and sound.
Anyway this is cheap to try. candidly I'd only do this if you track a lot.
You'd be just fine as long as valves are present. Very livable with the valves closed on the SMB.
With Fabspeed bypass, both valves are open so most air would go though the straighter section, but I wonder what the difference is to actually closing the upper entrance on the rear center section.
This is also where I am having trouble with side delete because when valve is open the most direct path is the same as BBI bypass, so is a fair amount of exhaust still going through the sides with the valves open???
I have the Sharkwerks Track Exhaust and have not had any issues (other than one of my neighbors complaining ). I contacted my dealer and got authorization from them and a statement saying it wouldn't void my warranty (CYA just in case). I contacted Sharkwerks and (as their website states) you will get some torque loss below 3500rpm but my car lives above that most of the time !! The weight savings are huge, 60 lbs with this exhaust. Also, removing the silencers also helps to keep the tires from over heating during track use (so I've read). This is what I comment on in reference to my experience.
...When I was a kid, I used to get noise by using clothes pins to attach baseball cards to the spokes of my bike (yeah, I'm old ) and make it sound like a motorcycle. Want more noise, use more baseball cards. Sounded cool...
Like Mike in CA and Alan C, when I was a kid I too used clothes pins and baseball cards to get that motorcycle sound. But after a while, I needed more sound. I wanted it louder and I wanted to control it.
So I upgraded to the Mattel Vrroom motor (a plastic, battery operated noise maker that attached to the frame and had a thumb lever control on the handel bar). Very cool and it improved the power band across the range.
Like Mike in CA and Alan C, when I was a kid I too used clothes pins and baseball cards to get that motorcycle sound. But after a while, I needed more sound. I wanted it louder and I wanted to control it.
So I upgraded to the Mattel Vrroom motor (a plastic, battery operated noise maker that attached to the frame and had a thumb lever control on the handel bar). Very cool and it improved the power band across the range.
.
LOL. That's awesome, Al! I actually remember those Mattel units. When they came out I was about 14 and a little beyond the intended demographic but I secretly wanted one anyway.
I have some concerns regarding long term effects of any engine/exhaust modifications on the GT3. The long term reliability of this high performance engine has yet to be determined. Warranty and good will post warranty come from Porsche not the dealer. Dealer assurances that modifications will not affect the warranty are baseless unless the dealer offers a written statement to the effect that they (the dealer) will be responsible for any warranty claims denied by Porsche due to the installation of aftermarket parts endorsed by the dealer. Everyone has a different threshold for risk vs gain when it comes to modifications of OEM.
I have some concerns regarding long term effects of any engine/exhaust modifications on the GT3. The long term reliability of this high performance engine has yet to be determined. Warranty and good will post warranty come from Porsche not the dealer. Dealer assurances that modifications will not affect the warranty are baseless unless the dealer offers a written statement to the effect that they (the dealer) will be responsible for any warranty claims denied by Porsche due to the installation of aftermarket parts endorsed by the dealer. Everyone has a different threshold for risk vs gain when it comes to modifications of OEM.
I shared the same concerns but I do have it in writing from the dealer and access to plenty of attorneys (hope it never comes to that). I do understand why the original exhaust system is very quiet until about 3800rpm (engine needs the back pressure in the lower rev range to maintain the torque) but Ive scoured the internet looking for articles on GT3 engines damaged by aftermarket exhausts and haven't found any. Has anyone see any? Im talking about all generations of GT3s. Not just the 991.
I have some concerns regarding long term effects of any engine/exhaust modifications on the GT3. The long term reliability of this high performance engine has yet to be determined. Warranty and good will post warranty come from Porsche not the dealer. Dealer assurances that modifications will not affect the warranty are baseless unless the dealer offers a written statement to the effect that they (the dealer) will be responsible for any warranty claims denied by Porsche due to the installation of aftermarket parts endorsed by the dealer. Everyone has a different threshold for risk vs gain when it comes to modifications of OEM.
I have written statement giving me clearance. They said only warranty on the exhaust was affected.
06-15-2015, 12:35 AM
It truly does bring the car to a different level, admitidly I was shocked how much more intense my experience is driving my car after just putting on the side fvd j pipes. 
)) I can already sense that down in a couple of months the BBi will be coming.
). I contacted my dealer and got authorization from them and a statement saying it wouldn't void my warranty (CYA just in case). I contacted Sharkwerks and (as their website states) you will get some torque loss below 3500rpm but my car lives above that most of the time 
!! The weight savings are huge, 60 lbs with this exhaust. Also, removing the silencers also helps to keep the tires from over heating during track use (so I've read). This is what I comment on in reference to my experience.
