Originally Posted by shockin330i
which is better, oiled or dry?
go for the dry one.
Originally Posted by Army335xi
From what I can tell...
I've got a 3" Single Pipe (not a true dual exhaust system) that leads to a huge muffler (dual exhaust). I know I've got one big cat on the down pipe, but I can't see another cat afterwards.
Once I get the car on a lift, I'll be able to see whats really going on down there...
I'm envisioning cutting the stock muffler out, putting a 'Y' pipe in, and having two 3" pipes lead down to some straight thru Magnaflow or Aero Exhaust mufflers, going back to the stock tips.
this is how the N55 OEM exhaust is.
drop'd my exhaust last night and installed the Vanguard Exhaust.
that's one way to save money, bmw. ty.