Whats the highest speed one can downshift in to make their car accelerate as hard as it can? For example: coasting in 5th gear at 60mph, and then going into 3rd to get to 90mph as fast as possible. Can one do this at 90 mph to get to 120 mph, etc.

 

Well you need to be carful because if you say down shift from into to low a gear you will bang the limiter.

PLUS you need to match the revs to the new gear or the car will jerk and you will slow down and look like a goof. If you need to down shift like that you need to learn to heel toe to match the engine revs for the new gear.

 

Just try at different speeds dropping it into a gear for a sec to see what it brings the RPM's up to. Jut dont drop to a gear and bring yourself above the power band.

 

or just see what speed each gear tops at and then if youre within like 5 or 10 mph of the end of that gear, you might now wanna drop to it. and give it gas right as you pull off the clutch or just ****in romp that *** and dump it from redline and youll have no problem with slowing down on the downshift.