Need help. X5 4.4 exhaust piping size
 

Bout to buy the magnaflow x-pipe. but it shows 3 sizes. What size piping to i buy? 2.25, 2.5,3.0????

2.25 All around


Thats what i heard

I found it was 2.25 using search.

Re: Need help. X5 4.4 exhaust piping size
 

2.25 is what I used. Others have used 2.5. I think 2.25 is a closer fit.

Take a picture before and after you install it

think its a metric size. i think i ended up going from 2" ID after the cats where i cut the resonator off, and the same on the flange before the muffler connection. (that was the only one where the pipe closer to the engine goes over the pipe further to the back. normal praticae would be to always have the previous pipe go into the following pipe. ? does that make sense?) then just worked it out from there to fit my cross over.

Thanx.....just ordered.. Will take pix before and after soon as i get the part...