Had a friend buy a jaws can for his 600 sdi and after installing it and running it for a day he's ready to sell it. The problem is when he gets on it "throttle that is" he says its taking longer to rev up to the top end and it feels slugish. I have personally had many jaws products and couldnt be happier. Just wondering if anyone else had this issue with their 600, possible fix? I realize cans do nothing for power gains but jaws has always been good for not dropping any power.