wow just got doen fixing suspesion so the car is drivable now wow the RPM never ends it just wants to keep goin and goin very fun and i have headers with a aftermarket exhaust that the previous owner put anf holly hell is it ear piercing. if i were to put a cat should it take all the sexy rotary noise away?

 

No, it will just quiet it down so you dont go deaf, it will also be more friendly to the environment. THINK ABOUT THE CHILDREN!!!!

 

lol only thing is there no like UMMMPFFF powerrr the car moves but there no like punch car is going to 1 day paint 2marrow hazaaa

 

the cat will help with that but its a rotary they suffer from little low end torqe thats what high revs are for

 

Yah, your power will be up top more so than down low.

 

If your car is an N/A, your 6 port actuators won't work if there is no cat.

 

Doesn't that only apply to S4's? I'm pretty sure the split-air pipe isn't required on S5's for the port-actuators to function. Then again... I could be, and probably am... wrong.