FYI - I installed my Cobra Tri-Ovals last night. They fit exactly as I expected they would based on photos posted here (thanks Beagle). They sound excellent at idle, and to my surprise, I can barely hear them while driving (no helmet ). As I've been experiencing a "hesitation", actually more of a dead spot between 2-2.5k RPM when not fully warmed up, I thought I'd do the ECM reset after they were installed. It took 15 minutes of idling in place (ambient temp ~80F) for the fans to kick on and off. The bags were not hot, barely warm.

I just thought I'd offer my observations regarding the Tri-Ovals.