Light weight UnderDrive Pulley.

[.gauge.]

Extra battery's mean extra weight. Adding that much weight takes from whatever performance the pulley added. I understand the motor has less mass to move, and the benefits in throttle response, quickness of revs, but ultimately i think the original posters intentions are to have a faster car...

Ultimately read up, maybe even find another modification inthe same price range and run with that. Save up and gets a cam(s) IMO...

Do you have a stock motor?

header,exhaust,cai,I manifold, throttle body. light flywheel.!

If he was worried about weight, he wouldn't have put a system in.