GMMG or go dual
10-23-2010, 10:42 AM
#21
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Had duals-Twice. One with bullets and a X junction and another with one chambers and no X. No difference at the track between the two. Have a GMMG now and like it. Had a loud mouth also before duals and a custom catback 2nd. Its all what you want on sound. Been running a H/C set up with all and very little difference in track times. It mainly came down to the variables of temp-baro pressue and what not. Price is what you feel comfortable paying for.
10-23-2010, 12:48 PM
#22
I had a GMMG. Started Stock Manis/Cat then GMMG. Sounded great. Then Kooks / Catted Y/ GMMG, and sounded even better. Then about 1.5 years later did H/C/I with Kooks/Cats/GMMG. I don't know if I got used to just LTs and GMMG, but with the H/C is got ***** loud. With cats I thought it would get down on some of the gnarly loudness, but it was no longer "bassy and deep" like it used to be with just headers, it just screamed. Ended up selling my Catted Y and GMMG for coin for my Textralia clutch and found a used X-pipe with Spiral Flows. After hearing those, I should have just went duals in the first place. Now on the fence on switching the spiral flows to 1 chambers. Will prolly end up doing that next season.
In essence, the only thing that shyed me away from duals in the first place was the lack of tips in the cutouts of the Trans Am bumper, which led me to a catback, but now I love the look with nothing there. I would recommended duals to anyone.
In essence, the only thing that shyed me away from duals in the first place was the lack of tips in the cutouts of the Trans Am bumper, which led me to a catback, but now I love the look with nothing there. I would recommended duals to anyone.
10-23-2010, 04:33 PM
#24
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Yeah I've decided to go duals and now its just the decision of exactly what set up to go with. LS1sounds is good but its really hard to tell without hearing it in person. Looks like I'm just going to have to trying different set ups till i find the right one.
10-24-2010, 02:30 AM
#25
I've had both gmmg and duals that I used chambered mufflers on. Although it was an LT1 car I was a lot happier with my duals. The gmmg was a great cat back but it is really raspy with an ory and a cam. If you search, type this in the search bar and look under the lt1 section, "pacesetter lt's + 2.5 x pipe + 20" powersticks". That's a thread I had from a while ago when I had my powersticks on my z28. You may like it. That and after I sold my gmmg here on tech, and had my duals purchased and fabbed up. I made almost $300. It was a win, win situation. Good luck on your decision.
10-24-2010, 10:50 AM
#26
I enjoy my GMMG but I like duals too. The only reason I won't run duals is the clearance. This isn't a challenge for you duals guys to post about how you could park your cars over a 5-gallon bucket without it touching your TD's; I just don't want to get TD's and scrape the shitty roads of NC with them everywhere I go. On another note, I'm still a stock-internal car and I've NEVER heard a stock-internal LS1 that sounded good with TD's. **** sounds like a garbage truck.
10-24-2010, 06:22 PM
#28
10-25-2010, 01:39 AM
#34
take into account how you will use the car/where you live. mine is a DD so my exhaust setup as of right now is LPP LTs/ORY (will be catted), Flowmaster merge, magnaflow bullet muffler, GMMG. I love the sound. I had the opportunity to sell my GMMG and buy a set of dumped TDs with sweet thunders for $350 but being in California and DDing the car, a catback was a better choice
