I need advice! :)

[Bo525i]

Awesome, thanks!

[genphreak]

Tried building one once. Seen a few do it also. All fail the quality or rear seat drone test. Knowing that I bought a new Eissenmann for the M50. About USD $300 here in Oz. Got a new muffler too for about the same dollars. They bolt together with two special joiners- and bolt up to the cat directly. Sounds nice, works perfectly, car runs like new . M50 ECUs like to know their combustion is good.

Beware, 525 has three or more tailpipe ocnfigurations so it can be trouble mixing up one muffler with another resonator.