TORCHD 02 TA

iTrader: (39)

Thank you.. Here some vids of me at the track.. Still no rasp

http://www.youtube.com/watch?v=o_jezOZ2Fao

http://www.youtube.com/watch?v=S1Qx8hgu8i0

http://www.youtube.com/watch?v=ayzirfP3498

hlaalu

iTrader: (3)

noob question, what does drone sound like?

hitmanws6

iTrader: (20)

fyi the GMMG mufflers are straight through. they dont neck down like sweet thunders do, which is what most people think GMMG uses. the muffler looks like a cherrybomb inside, but without the fiberglass packing.

TORCHD 02 TA

iTrader: (39)

They do neck down. It goes from 3" (i pipe) down to 2.5" or 2.75" I beleive.

hitmanws6

iTrader: (20)

very true, they go to 2.5 right after the over the axle split, i was referring to how sweet thunder mufflers that are 2.5 inches for example neck down to 2.25 inches. for some reason half of tech thinks GMMG uses sweet thunder or stainless works mufflers.

BRD-PREY

iTrader: (5)

I wish I recorded it. You know how if some one opens a window in a 4 door you get that like pressure feeling. The drone doesn't have the pressure but it has a steady whoo sound another wordds it like a continous deep tone at certain rpms and load. Mine was terrible at 1600 to 1900 at highway cruise speeds if I open the throttle from like 15% to maintain speed to like 40% at 65 mph to pass a car without downshifting you would get this big whoo (drone)very deep and loud.

Someone help me out here!

I no longer get it.

BRD-PREY

iTrader: (5)

Cut of my GMMG with DynoMax Bullet in the intermidiate pipe. QTP LT offroad QTP Y-pipe

http://www.youtube.com/watch?v=3vHN0SE7Prw

thewholefnshow1

iTrader: (2)

Hey Torchd 02 TA what size and where did your get your power stick bullet muffler and about how much do they cost? I have a little of rasp with my kooks and catted Y but it's kinda a good rasp to me but not and no where near that loudmouth rasp and drone. I love my GMMG sometimes I just want to crawl under the care and hold on to it an never let it go but that's going to change I'm going to install a CME setup.

BRD-PREY

iTrader: (5)

[QUOTE=thewholefnshow1;12322016]Hey Torchd 02 TA what size and where did your get your power stick bullet muffler and about how much do they cost? QUOTE]

Eric at classic chambered

type that and "powerstick" in google.

Do you have LT headers?

Ed

SSmokin99

iTrader: (7)

Here's mine... GMMG, LT's with ORY
http://www.youtube.com/watch?v=4TirTAJBOW0
http://www.youtube.com/watch?v=pocrNvLbyys

thewholefnshow1

iTrader: (2)

[QUOTE=BRD-PREY;12351557]
Hey Eric it's me Johnny I called and ordered the 20" powerstick from yall and yes I have the GMMG exhaust with Kooks LT & Catted Y.

BRD-PREY

iTrader: (5)

[QUOTE=thewholefnshow1;12353224]I'm not Eric I was answering your question.

I'm Ed

Marc3.4V6

iTrader: (1)

I read several claims of GMMG owners that there was no drone. I just got it installed today and I disagree. I'm trying some second skin damplifier sound deadening and probably later a powerstick in the i-pipe. I want to put the longest possible, anyone know if the one with the 26" body length fits?

farmington

iTrader: (14)

I used the medium length one. It did take care of the drone.

Marc3.4V6

iTrader: (1)

Thanks a lot farmington.

Marc3.4V6

iTrader: (1)

Spoke with the guys at classic chambered (powerstick makers) and they actually suggested one of their resonators at a custom length as opposed to a powerstick in the mid pipe. I'm still researching but I'm looking into a high flow flowmaster merge in addition to the resonator to help even more, but am confused if this would do anything with a stock y-pipe.

maxpower_454

iTrader: (7)

A flowmaster merge will definitely help with rasp but I'm not sure about drone.

RevGTO

iTrader: (12)

A FM merge is something you use with LT's, not a stock Y-pipe, which has a decent merge anyway. I never had a drone issue with my GMMG on stock manifolds - sounded great!

Marc3.4V6

iTrader: (1)

Strange, I get drone, but mostly when accelerating, and sometimes at certain rpms up hills. Well I hope the resonator doesn't cut the sound down too much, still not sure what length I'm going to use, maybe 18" body length.

Marc3.4V6

iTrader: (1)

I think I'm going to use one of Classic Chambered's Cobrapack mufflers as a resonator. Not sure if I'm going to use it with or without packing yet, waiting to hear back on what they think is best. What's crazy to me is that in my old LT1 I was running a TSP Rumbler that consisted of a powerstick (I swapped it in) in the i-pipe and nothing else, yet it has zero drone. I still like the sound of the gmmg, mostly on the outside. I kind of wish I had done this before I had it installed:

http://www.ls1.com/forums/f52/2011-w...g-pics-155963/