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Has the gmmg ever been flow tested? does it flow as good as loudmouth or true duals?

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Old 04-13-2004, 11:34 AM
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Has the gmmg ever been flow tested? does it flow as good as loudmouth or true duals?

i like the way it looks and the sound seems very good, im just concerned about the bends, seems like it wouldnt flow very well, seems like it would be restricted compared to other systems. please, im not trying to start any crap i hope we can have a mature discussion abou this, if you wanna say something smart then just keep your opinion.
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Old 04-13-2004, 11:57 AM
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yeah its got extra bends, but it also has 2 mufflers, so the exhaust is split between them.

i'd be willing to bet the lose over a LM (basicaly straight pipes) would be less than 2hp
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Old 04-13-2004, 12:00 PM
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thats cool, so basically it wouldnt be noticeable and with the gmmg it sounds better, im sorry i keep asking questions like this but its hard to get a good sound with sound clips, i wish i could hear one in person. so basically a stock ls1 with the loudmouth and a stock ls1 with the gmmg if both were at the track, neither exhaust system would make a big difference in 1/4 times than the other? has anyone dynoed the gmmg on here?
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Old 04-13-2004, 12:05 PM
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DAMN!!!! I just talked to ron and he said they only gained 1 rwhp with a cutout over their gmmg system, talk about flow i cant wait to get this im sure it sounds even better with longtubes
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Old 04-13-2004, 12:37 PM
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As you can see in my sig, I have the GMMG and FLP LT headers. You could hear mine. I live in Lancaster county. Where do you live? I am not familar with the town you live in.
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Old 04-13-2004, 04:08 PM
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i think we are quite a ways from eachother im from windber, its 10 minutes from johstown
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Old 04-15-2004, 12:57 AM
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Originally posted by bluecmaro96
DAMN!!!! I just talked to ron and he said they only gained 1 rwhp with a cutout over their gmmg system, talk about flow i cant wait to get this im sure it sounds even better with longtubes
I've been trying to tell you, just get the GMMG, you cant lose. You'll love it.

-Dustin-
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Old 04-15-2004, 05:49 PM
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i have no numbers, but seeing as they both have no mufflers, only resonators i don't see how the difference could be very much. why don't you e-mail the companies about some numbers, or maybe berger chevrolet or sumthin.
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Old 04-15-2004, 05:58 PM
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Have you not heard about or read about the 427 c.i. ZL-1 Camaros that GMMG built? Well, it's a 427 c.i. LS1 engine that makes 600 HP............yes, 600 HP!!!.........and it's running through the GMMG exhaust, so I don't think you're going to suffer a loss by using it on a relatively stock LS1.
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