I live in Houston and cannot have my A/C compressor turning slow at idle. I just noticed that you can now purchase the N1 pulley in a lighter-than-stock version but with the same diameter! Same belts as factory too! It removes about 4lbs. from the crankshaft. I am not going to purchase it until I install my 12lb. flywheel first. I don't want to take too much weight off of the crankshaft.