i think he means where the two muffler tips are ato opposite sides of the car....eg S2000 style what im saying to him is that if he was to get that sort of setup it would have to bbe engineered extremely well not to lose backpressure, then power in a 1.8 lt NA car.....it can be done but is technically alot harder and almost destined to make the car lose backpressure and nullify any scavenging effects of the exhaust




Quote Originally Posted by aaronng
I don't think you would lose power if it was just a twin muffler with normal tips. It's the same as standard all the way til after the resonator where it splits into 2.

The only cars that will really benefit from a real twin muffler setup is one with 2 exhaust manifolds, i.e. V configuration engines. Also cars with reasonably high flows (large capacity or turbo) might use a twin muffler so that they have 2 narrower pipes to route underneath rather than one huge pipe that eats up fuel tank space and what not.