Optimus_Prime

iTrader: (4)

Does anyone know how much horse the GMMG catback gives?

Lithium

iTrader: (47)

Same as every other catback. I really dont think that the GMMG would flow more then say the magnaflow.

Warbird98

iTrader: (1)

I dont know maybe 10 to 15 but it sounds DAMN MEAN! With this exhaust I have guys with heavily moded cars sayying DAMN what you got in there!

Optimus_Prime

iTrader: (4)

hehe mines in the mail

Lithium

iTrader: (47)

congrats

GuitsBoy

iTrader: (4)

Buy an exhaust for sound and drivability, not for power. Real power will come from the more serious mods later in your cars life. The difference in power between most catbacks can be made up by removing the floor mats and loose change in the cup holder as a weight savings.