GMMG, how loud?
GMMG, how loud? i have spent hours on ls1 sounds and searching the forums, but considering no 2 cameras sound the same, i can not make up my mind. so i decided to ask. i am trying to pick a cat back for my 02 ws6. I'm torn between the gmmg and the magnaflow. I'm leaning hard towards the gmmg, but without hearing it in person i cant be sure. all i really want to know is how loud is it. compared to the magnaflow, borla, and lm1. if someone could put them in order from quietest to loudest for me that would be incredibly helpful.
thanks in advance,
Bruce
thanks in advance,
Bruce
It's the second-loudest after the LM with headers. It's actually louder inside the cabin than a LM1 but sounds great. I'm putting a dual/dual on with cme in a couple of weeks to go quiet again. Good luck man.
I have GMMG on the car now. Sounded awesome and not too loud with stock setup before GMMG. Added longtubes and it got louder but still sounds great. Not overly loud in car, you can carry on a conversation without raising your voice. Added a electric cutout and my friends say it sounds like a nascar when W.O.T. After personally hearing Magnaflow, lm1,lm2, id definitely rate the GMMG as best sounding with our without headers
In order from quietest to loudest:
Magnaflow
Borla/GMMG
LM1
My brother has LT's, ORY, magnaflow high flow cat in the i-pipe, and GMMG and it's loud as fuh at highway cruising speeds inside the car...
I've had Magnaflow on my car, switched to LM2, and now at Borlamouth (XR1 muffler in place of the LM2 muffler) All w/ LT's and ORY. Borlamouth is by far the best sounding. Deep, throaty, and just as loud as LM2 when you get on it. Not loud inside at all while cruising.
If you're just doing catback, GMMG, Borla or LM1 is the way to go. If you're adding LT's and ORY, both will get raspy as ****.
Magnaflow
Borla/GMMG
LM1
My brother has LT's, ORY, magnaflow high flow cat in the i-pipe, and GMMG and it's loud as fuh at highway cruising speeds inside the car...
I've had Magnaflow on my car, switched to LM2, and now at Borlamouth (XR1 muffler in place of the LM2 muffler) All w/ LT's and ORY. Borlamouth is by far the best sounding. Deep, throaty, and just as loud as LM2 when you get on it. Not loud inside at all while cruising.
If you're just doing catback, GMMG, Borla or LM1 is the way to go. If you're adding LT's and ORY, both will get raspy as ****.
Last edited by egott_91; Mar 22, 2011 at 10:53 PM.
I had a Magnaflow CB on my car for a few months and with a few 900 mile one way trips home the sound at cruise is, believe it or not, louder/dronier than the GMMG at cruise (65+). Once you get on it, who cares how loud it is, as long as it sounds good! I have had compliments even from just starting my car. The GMMG has a deeper tone, but not droney AT ALL. The Magnaflow gets annoying after a while. I would definitely spend a little more for the GMMG. You WILL NOT regret it.
BTW, I am stock with just GMMG CB
BTW, I am stock with just GMMG CB
Love my GMMG. Have had it on the car for like 4 years. No droan and its not that loud on a stock car but it will whail at WOT. I just installed long tubes and an ORY over the weekend it sounds amazing with the GMMG. Louder yes, but I was actually suprised how quiet it was cruising. Now at WOT its like the hand of God. Pure sex.
TECH Addict
Joined: Apr 2009
Posts: 2,354
Likes: 2
i have spent hours on ls1 sounds and searching the forums, but considering no 2 cameras sound the same, i can not make up my mind. so i decided to ask. i am trying to pick a cat back for my 02 ws6. I'm torn between the gmmg and the magnaflow. I'm leaning hard towards the gmmg, but without hearing it in person i cant be sure. all i really want to know is how loud is it. compared to the magnaflow, borla, and lm1. if someone could put them in order from quietest to loudest for me that would be incredibly helpful.
thanks in advance,
Bruce
thanks in advance,
Bruce
Loudness
Stock
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-Magnaflow
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-Gmmg
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-Loudmouth/Cut-out
Trending Topics
Joined: Nov 2003
Posts: 6,216
Likes: 236
From: Wichita KS / Rancho San Diego
Love my GMMG. Have had it on the car for like 4 years. No droan and its not that loud on a stock car but it will whail at WOT. I just installed long tubes and an ORY over the weekend it sounds amazing with the GMMG. Louder yes, but I was actually suprised how quiet it was cruising. Now at WOT its like the hand of God. Pure sex.
I don't like the standard Magnaflow catback with those cannon tips. It doesn't sound great, either, IMO. The best way to go there is to buy their muffler separate and build the catback with Dynomax I and over the axle pipe and muffler shop fabbed tailpipes.
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I have always thought of gmmg as a great sounding lm1,magnaflow even on a cammed car still is kinda quite,if ya want quite magnaflow wins,oh wait but screams at wot lmao,gmmg is loud but cats will always help,it really depends on if your staying stock internals or not,but imo gmmg craps on magnaflow any day of the week!
On a stock car its perfect. I'v been running my GMMG for abour 3 yrs now. I wouldn't trade it for the world
Once I added my cam, LTs and O/R Y you need ear plugs when i go WOT
and it was raspy. To tame it I added a flowmaster merge and the key component was adding a powerstick in the I pipe and installed it against the grain. That is what killed 98% of my rasp
Ohhh and I also have a cut out on the car too
Once I added my cam, LTs and O/R Y you need ear plugs when i go WOT
and it was raspy. To tame it I added a flowmaster merge and the key component was adding a powerstick in the I pipe and installed it against the grain. That is what killed 98% of my raspOhhh and I also have a cut out on the car too
I took my GMMG/LT/ORY car for a long trip driving my 6 speed around 1800rpms for 2.5 hours one way and it was SO droney. I loved it more before that trip. I had it on stock manifolds for over a year and it sounded awesome; I put lt's on it and it sounded even better. If I still had it, I'd run cats and be done with it.
I took my GMMG/LT/ORY car for a long trip driving my 6 speed around 1800rpms for 2.5 hours one way and it was SO droney. I loved it more before that trip. I had it on stock manifolds for over a year and it sounded awesome; I put lt's on it and it sounded even better. If I still had it, I'd run cats and be done with it.
So true on the drone lol. I cannot carry a phone conversation with anyone.
Launching!
Joined: Aug 2007
Posts: 218
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From: El Paso, TX again
Stock, you'll love it. I have no LT's and still have have the stock cats. Your gonna want cats if you go lt's. I have heard it with an ory and it is a bit raspy. Not as bad at the LM1 though.
