i recently had my b pipe replaced and o my god what a difference in gas millage did that make!!!!!!!!!!!!!!
before the repair i got only 67 miles to a half tank of premium
after repair and oil change im running 176 miles on a half tank

just thought i would brag a little

also i believe i have a leak comming froma manifold???? could be... it sounds like its comming from the back of the engine

 

You might as well have dropped a 454 big bock in the Max.

 

the noise is most likely broken exhaust studs, or a bad gasket between the manifold and Y pipe. both very common.

 

 

I was doing some more thinking about that gas milage, and I think my Dad's crew cab dually gets better gas mileage than that. How long have you been getting this type of mpg.

 

Man, I get better gas mileage than that and I only drive two miles to work and never go faster than 30 mph. On top of that, the car usually warms up almost as long as it takes to get to work.

 

it was only for 2 tank fulls, but it was serious! as far as the noise i hope its not the exhaust studs, how would i be able to tell the difference between the 2 problems?