I searched, and didn't find anything. I just installed my GMPP Performance cat-back today. After I took it out to make sure there was nothing loose, I parked, and it almost smelled like plastic melting? Is this normal? Is just the packing in the muffler? It's an 08 LS.

Also, does having a tip make any difference in the sound? I didn't feel like paying 60 bucks for a tip, so I'm going without for now. Thanks in advance.

 

im sure its just a new smell

 

Mine too smelled weird for a while but now it's ok...And the tip is more esthetic you knw..It looks better with it..

 

Thats normal, its burning off all the oils inside the exhaust from the factory. Takes a few days!

 

It happens with everyone who has them installed.
Burning smell, took a few weeks for mine to disappear.

 

Once its broken in the smell will go away. Give it 1-3 weeks.

 

yea, you smell it with new car stock exhausts too

 

i just cut the tip off my old exhaust and welded it on. looks great. if you cant weld a shop would probably charge you like $10 to do it.

 

I might be wrong on this, but i think you will want a tip so the exhaust doesnt mess up your bumper.

 

that exhaust just stinks

 

yea i drove for a while without a tip...its no were near....its close with the tip

 

My GMPP exhaust smelled bad for about a week (300 miles). I know when I took it out of the box it had lots of little styrofoam ***** in it. Took awhile for them all to burn out I guess.

 

I just went to a car store and bout a stock looking tip and welded it on, its looks clean and stock.

 

the tip does nothing though...just for looks

 

Right
There's protective oil inside. I also got that smell with my GMPP Touring but it eventually goes away.
Just drive on the freeway like I did so it speeds up the process

 

One more question. Does this system get any louder? When I had Flowmasters on my old truck, after a few hundred miles it got loud as hell. Does that happen with GMPP?

 

That is common, now worries.

 

What he said

 

yes it gets louder, not by a ton buy it sure will. throw an intake on there and you will LOVE the sound. i get compliments daily.

 

yea mine kinda smelled like burnt toast lol. but after a few days it went away.

 

Yea dude i had the same thing happen. Its just because its new and everything. nothing to worry about

 

Thanks a lot, guys! I wasn't worried about it, just curious.