Hmmm, thats weird...When you don't manually shift Our cars should redline at around 6000 or 6200 right? And the rev limiter is at 4000 right.if so then my tach is right on.Just curious. Before i knew how to find the tach wire...i tried hooking it up to the coil and i couldn't get a wire to give me the right reading...It showed that i redlined at 3000..Lol. I knew that wasn't right.