the crank shaft its harmonic balance?

luigi90210

from what i read OP is that pulley mods will give you like 2-3whp in 1st gear, 1-2whp in 2nd, and 3rd all gains are negated from the underdrive pulley

honestly it isnt worth the money and the risk, if you want better throttle response, buy a light weight flywheel or have up rev change the throttle tables

the only situation i can see a pulley being worth the money is when you are building an N/A race car and you were given the car for free and given a budget to spend on building the car, then picking up 3whp here and there will add up and might give you the upper hand in the race