here's one...my 05 LE does that..sorta..sounds like mine may be different. when im goin through the gears, when i get to about 3500rpm, 1st, 2nd and 3rd, dunno about anything else cuz of wind noise, but i heard a tapping or knocking..kinda like the chain popping, but its not the chain i KNOW because its way too slow and like i said its in each gear at the same rpm. plus its about 4 knocks/taps about a half a second apart. a friend suggested possibly the cam chain tensioner, which was the prob with his honda when he had the same noise. i keep my chain tight every oil change and lube it every 500mi or so..but it wont do it in N.....HELP!!