Originally posted by SVTwannabe:
I have heard of guys who had a glasspack welded in backwards. Because it is backwards, it gets rid on the rasp but doesn't make it any quieter. Might want to try that.
Most glasspacks are non-directional. (louvered kind (read crappy!) are uni-directional)
Putting a uni-directional glasspack backwards does nothing except make it blow out faster (as if they don't blow out fast enough as is) and also will make it louder!
A glasspack will do nothing for rasp.
Glasspacks and their better cousins Resonators are for killing noise level and drone.
If you want to kill the rasp put a full size high flow resonator (or cat if removed!) back in.
A catless Y-pipe is were a lot of rasp comes from. (most common reason for rasp)
Headers or gutted manifolds are much worse for producing rasp! (this may be a good mod for power, but damn does it have some nasty drawbacks!)
I can't believe I don't hear people complaining all the time about how bad the exhaust sounds because of these mods! It's like a swarm of angry Honduh's... :rolleyes:
Sounds like complete Ass IMO... Even warm it sounds bad under hard acceleration.
