GT Motorsports: GTM COMPLETE Turn Key G37 Twin Turbo kit, 455 rwhp 338 rwtq
Joined: Sep 2006
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From: California
Yes it does, I just figured that was common knowledge but thank you for pointing that our.
Also keep in mind slightly higher compression isn't going to make THAT much of a difference, the gains are mainly attributed to the VVEL, although it was a combination of things.
-George
GT Motorsports
Also keep in mind slightly higher compression isn't going to make THAT much of a difference, the gains are mainly attributed to the VVEL, although it was a combination of things.
-George
GT Motorsports
What did this car dyno stock ?
absolutely amazing that you were able to get 455rwhp out of 5psi ! Stock the G37 AT5 should put down around 250-260rwhp . That would mean you are getting 40rwhp out of every psi of boost . ABSOLUTELY AMAZING !
absolutely amazing that you were able to get 455rwhp out of 5psi ! Stock the G37 AT5 should put down around 250-260rwhp . That would mean you are getting 40rwhp out of every psi of boost . ABSOLUTELY AMAZING !
Whats the reason for the X-pipe if you don't mind? Sound? Power? Torque? Just curious. I turned my EVO2 into a true dual and it got a LOT louder! But maybe that is more becuase I pretty much doubled the flow area 
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Joined: Sep 2009
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Some of this changes however when you add a 'turbine' or two to the system on the exhaust side of the tracks (versus intake only).
Because on a piston engine what is important is to improve scavenging. A crossover pipe can help in this regard by helping to maintain velocity throughout the exhaust system.
Some of this changes however when you add a 'turbine' or two to the system on the exhaust side of the tracks (versus intake only).
Some of this changes however when you add a 'turbine' or two to the system on the exhaust side of the tracks (versus intake only).
Everything I have read on the subject indicates that once you add a turbo to the exhaust stream, all scavenging effects go out the window. Since turbo's work on the principal of differential pressure, the best turbo exhast possible is the one with the least possible backpressure. In theory, this would be nothing more than a conical diffuser (about 7-12 degree included angle, IIRC) that is about 3x longer than the entrance diameter. Obviously this is rearely possible due to packaging, sound, and emissions reasons. That is why I asked the question about the X-pipe that GTM has designed into their system. Perhaps it is for sound reasons?
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