My 2006 dodge 3500 won't accelerate over 65 mph

turbo

What do you mean.?. And it does have a turbo and it's a six speed.

if its a 3500 its more than likely a diesel,and when the turbo goes half the power goes too.....was it noisy or just louder ?

check engine light on?

or smoking

It is still running fine just won't go over 65 and not check engine light on and no codes I changed the fuel filter also and still nothing

Yeah it is smoking but not To bad

Did you ever get an answer for this i am having the same issue.