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Gmmg
Gmmg Im thinking of buying the GMMG exhaust system jsut wondering if anyone here is running it, and wondering how they like it. Also is the system expirincing any rust of any kind. thanx
GMMG was my VERY FIRST mod. Best catback I've ever heard IMO. I LOVE IT!!!! It is stainless steel, so it will never rust. Just the slightest bit of throttle and the bass will be coming. WOT this thing screams. Currently I have it on stock manifolds and cats, but this will change it about 4 weeks. Everything I've read about LTs and GMMG, makes it sound like it will be 100x better. Do a search in THIS forum "External Engine" for GMMG. A lot of threads.
I love mine. Nice low rumble at idle, screams when you jump on it yet very little drone on the highway until the revs get over 2k which on my M6 is over 80. Does do some "farting" before the engine warms up but I'd say it was one of my favorite mods.
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running gmmg with stock manis and cats. best of both worlds. just cruisin it around its got a little rumble to it, but when you get on it the beast comes alive. BUY it you will love it
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TECH Apprentice
Joined: Dec 2004
Posts: 309
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From: Evansville, IN
I'm running it as well. It is quiet at idle, but as soon as you apply throttle it wakes up. The thing I remember most about the first drive was being able to feel the bass in the back of my seat. If you can afford it, then by all means go for it!
Best sounding catback IMO! It has a nice loud idle, and sounds throaty and deep when driving around. For such a loud catback, it has VERY little drone. In fact, it isn't very loud inside the car at all.
TECH Enthusiast
Joined: Feb 2005
Posts: 722
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So for full exhaust, what would you guys recommend with GMMG? I'm either going with kooks or qtp's, then either catted y or ory. Which one would be best? Or any other thoughts? I'll most likely have to go catted y because of emissions but which one sounds better. It's kind of hard to distinguish on ls1sounds.
Originally Posted by Allergik2dyin
So for full exhaust, what would you guys recommend with GMMG? I'm either going with kooks or qtp's, then either catted y or ory. Which one would be best? Or any other thoughts? I'll most likely have to go catted y because of emissions but which one sounds better. It's kind of hard to distinguish on ls1sounds.
You won't hear any difference between any longtube you buy. I'd go with the QTP's because the come with HVMC's AND are cheaper than Kooks. My car had rasp even with a catted y, so I wouldn't get an offroad pipe if I was you. A dynomax bullet put an end to most of the rasp however. Here's my car at idle and wot.
http://sd.ootoot.com/Content/whistles/jeff.wmv
TECH Enthusiast
Joined: Feb 2005
Posts: 722
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Originally Posted by Redneck Z
You won't hear any difference between any longtube you buy. I'd go with the QTP's because the come with HVMC's AND are cheaper than Kooks. My car had rasp even with a catted y, so I wouldn't get an offroad pipe if I was you. A dynomax bullet put an end to most of the rasp however. Here's my car at idle and wot.
http://sd.ootoot.com/Content/whistles/jeff.wmv
http://sd.ootoot.com/Content/whistles/jeff.wmv
Originally Posted by Allergik2dyin
I was talking about the difference of sound/quality between the ory or catted y with the gmmg and longtubes. So you'd suggest a catted y with LTs and GMMG? Any one else?
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Joined: Feb 2005
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I think I'm sold on the catted y, it makes more sense for me. Especially for emissions and because I don't want rasp even though it won't be a daily driver. I still want to listen to music and maybe hold a conversation every now and then haha.