My engine feels like it's stumbling (best word i can think of to describe it) in all gears when the throttle is depressed more than 50%. It's violent enough that it throws me forward in my seat.
it occurs around 6000 rpms in 1st, 5400 in 2nd, 4600 in 4th, 3800 in 3rd, 2800 in 5th and 2200 in...