I just put my catless downpipes (Kooks) on and I have 1 major gripe I hope there is a easy solution to. Between 3-4k RPM with the motor under load, there is a REALLY loud raspy sound (think straight piped Honda). At WOT it continues into higher revs but not as loud. I have the factory sport exhaust so this basically is straight piped now. My gut says put resonators in but I don't know that there is a good place to put resonators with the stock exhaust. Ideas that don't include buying some several thousand dollar aftermarket exhaust?