Originally Posted by
Black Ack
I'm considering an RSR Exmag for my exhaust, mostly because of it's OEM looks, but is there a real difference in performance between the chambered muffler on this type of exhaust and a straight-through like the one previously mentioned? I know there's many schools of thought on it (e.g. more backpressure, more torque, etc.) but what's your take on it, having an Apexi WS? Thanks.
Personally, I have grown to hate resonant, flatulent N1 mufflers.
Here's the way I see it: When you use the car on a daily basis, why subject yourself to a barely legal exhaust that drones like hell on the highway and puts you on a first-name basis with the local constable?
From a performance perspective, the WS2 and RSR ExMag have plenty of headroom for most builds.
If all you're doing is cams, I/H/E and a 50 shot, the RSR / WSII won't be a significant bottleneck. The overall capacity of the WSII and diameter of the tubing will be fine.
However, if your plans include turbocharging, the marginally larger diameter of the Greddy SP2 -- which is a straight-through design -- is a better choice.