I had the shop install my Y-pipe and the muffler. Now when I give it 4, 5, rpm I hear rattling noise?? Is it the Y? Or they just did a crapy job?

 

I'd check under your car and make sure all the screws for the heat shielding are on. After I installed my RT cat, on of them that was being used as a bracket holder for the original cat was missing (stupid mistake on my part), and after that it was fine. Chances are, anything that's rattling around down there you'll be able to see and fix just by getting under the car. Probably (hopefully) nothing more than a missing bolt or something. If you don't have jackstands at home, then I'd recommend you take it back to the shop to have them look at it, and make them fix it. They shouldn't put up any argument about that.

 

It ****es me off no one ever does their $hit right the first time

 

The black one near your cat with like 8 bolts holding it on. Lemme guess, Cattman Y pipe?
Common problem on 5th gens. You can either buy a bunch of washers and lower the cross-member, or just take the d@mn thing off. I opted for #2 and have had no problems. Enjoy your Y-pipe

 

yup... most likely, that is it

 

Thanks Guys. Took it back to the shop they fixed it by bending the pipe a bit