Hi, recently i changed my serial and brokened exhaust manifold and mounted a friedrich motorsport 4-1 inox exhaust manifold with large tubes ( anulatin the pre cat) and the cat supressor, few months ago i changed the rest of the line, eliminating the intermediate silencer and putting a sport silencer in the rear, the car goes well and sounds very impressive, but last i mounted the 4-1 line, i feel that the car when i cut the acelerator don't reduce quick the speed, inlcuding in descents in 2nd when the car before reduce speed now win speed :S, the comp ratio are perfect, what u think about it? i mounted a very direct line and the engine don't reduce the speed well? ( sorry for my bad english) in low and medium range of revs i feel the car a little bit less power than before, but when i pass the 4500rpm the car kick eggs. A little questions; i losed power? its bad for the engine that exhaust system? with a de.cat i win anything or only lose? Im searching for the maximum spec, but the sound is brutal, and the POM POM's are always in my hears hehehe.
thanks mates.
regards from Spain