[c4lvinnn]

Originally Posted by extrashaky

Stop thinking about it and just do it. If you're thinking about it, you'll miss the timing so that even if you match the revs perfectly to where you wanted them, the transmission input won't be turning at that speed any more, so it won't match after all.

When I was learning to rev match, I had to change the way I thought about it. Instead of worrying about the exact RPM to hit, I started thinking of the transmission input speed as a hook moving down and the engine RPM as a ring. Then I just used the accelerator pedal to toss that ring up there so that it hooked on the transmission speed. If I tossed it too hard or too soft, it wouldn't work.

If you were playing a ring toss game in real life, you wouldn't sit there trying to calculate the speed of the ring and the speed of the hook and the distance between them and the wind direction and velocity. You'd just toss it up there and miss. Then you'd adjust by feel until you tossed it just right to catch on the ring. Soon you'd be able to do it every time.

Ring toss in a car is the same, except that the hook is moving a different speed in each gear. So downshifting into 4th takes a lower toss of the ring, while going into 2nd takes a higher one. You just keep tossing those engine RPM up onto the transmission by feel, and eventually you'll just do it without thinking about it.

This.

It's all by feel. too many variables to give you an specific "amount" of blip, especially depending on your deceleration rate.