Underdrive pulley vs. Stock pulley [Archive] - Toyota MR2 Message Board

pulley, underdrive, crank, 3sgte, stock, input, pullies, failure, pump, true, engine, info, advance, swap, premature, time, putting, worth, referring, unorthodox, billet, vibration, factory, heard, aftermarket, rubber, bushing, leads

I was trying to get some input on whether or not an underdrive pulley is worth putting on a 3sgte vs a stock pulley. I