I wanna keep my stock muffler- I bought dual chrome 3in tips(magnaflow)- and am ready to place an order for a b-pipe-
Considering the Warpspeed w/resonator but wanna know is this-
Is it the same expected gains between the 2.25"and the 2.5"-
If anyone can give me some info i'd appreciate it-

 

you wont notice any gains from 2.5 to 2.25. some have said there is a tone difference with the 2.5 being a tad louder. the only reason to go bigger would be for boost in the future.