i just got my sport catback installed today...and all i can say is WOW!!!! i love how throaty it is. However, when i accelerate, i feel quite a bit of vibration in the cabin from the exhaust...is this normal? Also, my bro was driving behind me and said i was burning oil...saw bluish smoke coming out of the pipe the whole time.....is this normal too? i'm burning richer for some reason.

 

bump

 

the bluish smoke is fine... it's just the oils and lubricants burning off of the new pipes... will be like that for a few hundred miles... as far as vibration, is it realy bad, or just a little bit? i know when I put my downpipe on, the extra vibration cause the exhaust to rub against the heatshield a little bit.. got a screwdriver and bent it up and out of the way, problem solved.

 

cool thanks...i figured it could be the exhaust just breaking in...and after about 50 miles tonight...the vibration seemed to lessen. it was never really bad...just noticeable.

 

I got cabin vibrations since I put the exhaust on, I think it might be those clips in the back rattling.

 

gotta love that gm catback

 

yea, it's going to vibrate more than stock because it's a lot louder, so that's normal.