Its time to get rid of the stock cx exhuast, so im gonna have a shop make a custom exhaust. Should i go with 2.25" piping or 2.5" piping? The car is going to stay All Motor, but may do some head work in the future. Im not sure if there gonna do it mandrel or crushed bent. Is the 2.5'' size piping to big for my setup? lets hear yuor opinions.

 

2.5 =

 

2 1/2 is fine since you have plans for your motor...
mandrel bend