I am about to purchase a centre dection for MY02 WRX. Whats the difference between resonated and none ie performance and sound.

 

not alot preformance-wise. and a little quieter noise wise, you`ll notice the noise difference more if you have a wagon, but not alot more

 

I have a Magnex resonated centre on my de-catted exhaust. Think it makes it a fair bit quieter than a straight through - in fact when I did the downpipe I hardly noticed a difference in noise level inside the car. Except for the actual turbo whoosh/spin noise.