Alright, I was on the way to work today and everything was good. I was driving on I-95 doing about 60 behind a grandma in a minivan. She finally moved, and instead of downshifting to 4th, I stayed in 5th and gave about half throttle. When I hit right about half throttle, I got a weird sound, almost a rattling sound coming from the engine. I backed off the throttle and tried again, the same thing. Just to make sure everything was ok, I downshifted to 4th when to half throttle, and nothing, I floored it, nothing, still sounded fine. When I slowed down to about 60, I tried it again in 5th, and the same thing. I have never heard this before, and it didnt sound good. Anyone ever heard this? I will try to get a recording of it and stick it up here tomorrow.