being NA all it will help with is a good launch and smoother shifts, I want it since I spray itll will allow me to spray throughout my shift without risking hitting my revlimiter

 

not smoother shifts as much as faster shifts.
like i said it allows you to keep the accelerator down so that eliminates the time it would take you to let off the gas, push the clutch in, shift gears, and then press the gas again.

its not much but it does shave a little time off runs.

 

well faster since the throttle is cut long enough for the synchros to realign so you dont bind with quick shifts, I guess smoother shift lever action is better wording