Hi Guys,
I recently installed 2 borlas with "H" pipe on my CC 08 chevy 5.3 and I have a question becuase it feels kind of strange when you are rolling on 4th gear and let the gas off a little bit it feels like a little weird rumble and actually when it does that on the odometer change from V8 to V4 and if you hit the gas change to V8 again, do you think is normal? or I just need to switch the mufflers to the originals?

Your comments are very appreciatted.

 

Not related but do you have pictures or can you tell me how you ran the H pipe on the new trucks. I was under them trying o figure out how to run a H pipe instead of a X pipe and I couldn't really find a great spot

 

Are you saying it is changing differently than normal, because thats what its supposed to do to save fuel, now that you have a louder exhaust its more noticable which is normal