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2013-14 Shelby GT500
Adapting dual mode exhaust ideas?
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<blockquote data-quote="Bad Company" data-source="post: 15870218" data-attributes="member: 141815"><p>The plan was executed with a H-Pipe versus the original X-Pipe idea. Unfortunately these cars don't have a lot of room under them. Trying to build a 4" X-Pipe that terminates in the stock location to connect to the mid-pipes that run so close to each other, down along the tunnel area, while also trying to fit 2 60mm wastegates in the area of the X-Pipe where it crosses is impossible. It is a nice idea that may work with a 3" or 3.5" X-pipe. I'm hoping by running the 4" H-Pipe versus a smaller diameter X-Pipe that there won't be a Hp loss that is normal for a H versus an X pipe. The other thing was with the wastegates being installed prior to the crossover of the H the fabricator didn't think the crossover needed to be as big in diameter. In these pictures it looks small, it is 2.5" diameter crossover. The big 4" pipe makes it appear much smaller LOL</p><p></p><p>A 4" H-Pipe that reduces to the 3" mid-pipes worked nicely. The car is scheduled for tuning in a few weeks. The snow storms that keep hitting the northeast has kept the car in the barn keeping a stackcruiser company for the winter LOL. </p><p></p><p>[ATTACH=full]1478501[/ATTACH]</p><p></p><p>I was down at the Mod Motor Nationals looking over the data logs of a car that ran with and without electric cut outs that he had in his X-Pipe before the X in the manner I was thinking of doing wastegates. He had a 3" X-pipe. The differences in the AFR was surprising between the runs with it actually leaning out, but still in the safe zone since he was on the fat side to start with. He also was averaging a .1 to .2 faster ETs with the cut outs open. </p><p></p><p>Here is my exhaust with the 60mm wastegates. The gates are set to open at 5.9 psi of boost. I did install a Parker XM series 4 port electric solenoid with a On/Off rocker switch to stop the boost signal from opening the gates if I desire to be utterly quiet.........like this thing is quiet running through the mufflers to begin with. The Corsa mufflers do have a 3" baffle system to start with. They come from Corsa with a reduced inlet that was very easy to change to 3". The mid-pipes are American Racing Headers standard 3" set up to go to their 3" mufflers. I had the Corsa mufflers and loved the sound with no drone, so I had them modified to retain that sound. </p><p></p><p>Here is what it looks like. </p><p></p><p>[ATTACH=full]1478502[/ATTACH]</p></blockquote><p></p>
[QUOTE="Bad Company, post: 15870218, member: 141815"] The plan was executed with a H-Pipe versus the original X-Pipe idea. Unfortunately these cars don't have a lot of room under them. Trying to build a 4" X-Pipe that terminates in the stock location to connect to the mid-pipes that run so close to each other, down along the tunnel area, while also trying to fit 2 60mm wastegates in the area of the X-Pipe where it crosses is impossible. It is a nice idea that may work with a 3" or 3.5" X-pipe. I'm hoping by running the 4" H-Pipe versus a smaller diameter X-Pipe that there won't be a Hp loss that is normal for a H versus an X pipe. The other thing was with the wastegates being installed prior to the crossover of the H the fabricator didn't think the crossover needed to be as big in diameter. In these pictures it looks small, it is 2.5" diameter crossover. The big 4" pipe makes it appear much smaller LOL A 4" H-Pipe that reduces to the 3" mid-pipes worked nicely. The car is scheduled for tuning in a few weeks. The snow storms that keep hitting the northeast has kept the car in the barn keeping a stackcruiser company for the winter LOL. [ATTACH=full]1478501[/ATTACH] I was down at the Mod Motor Nationals looking over the data logs of a car that ran with and without electric cut outs that he had in his X-Pipe before the X in the manner I was thinking of doing wastegates. He had a 3" X-pipe. The differences in the AFR was surprising between the runs with it actually leaning out, but still in the safe zone since he was on the fat side to start with. He also was averaging a .1 to .2 faster ETs with the cut outs open. Here is my exhaust with the 60mm wastegates. The gates are set to open at 5.9 psi of boost. I did install a Parker XM series 4 port electric solenoid with a On/Off rocker switch to stop the boost signal from opening the gates if I desire to be utterly quiet.........like this thing is quiet running through the mufflers to begin with. The Corsa mufflers do have a 3" baffle system to start with. They come from Corsa with a reduced inlet that was very easy to change to 3". The mid-pipes are American Racing Headers standard 3" set up to go to their 3" mufflers. I had the Corsa mufflers and loved the sound with no drone, so I had them modified to retain that sound. Here is what it looks like. [ATTACH=full]1478502[/ATTACH] [/QUOTE]
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Adapting dual mode exhaust ideas?
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