|
I'm not sure about older ex-mags, but the recent ones are 80mm w/ no resonator/pre-muffler.
The muffler is not restrictive at all. It is a straight through design, just like Apexi N1's or other canister exhausts. However, it might be restrictive at piping right before the muffler. There are some low angle bends, to keep the muffler exiting straight. If you went with an N1 or similar angled exit exhaust, you will probably get pipe bends of a higher degree before the muffler...keeping the piping straighter.
|