Best B-series cheap mod

A complete pulley set.
My friend just got them installed on his gs-r and saw 6whp at 8,000rpms, and 13whp down at 3,000rpm

Great mod for daily driving, nice amount of power gained down low.

is this for the crank pulley too ?

yeah man, complete set.. crank, a/c, alternator, and power steering.

What kind is it?

He got the aem set.

ask him again or maybe you got the kind of pulleys wrong because aem doesnt make a crank pulley

they dont make a crank pulley because the stock pulley has a harmonic dampener on it so it absorbs the vibration, but aftermarket underdrive pulley just have the pulley and no harmonic dampener so theres alot of vibration which can and has led to oil pump failure and bearing failure.

if you have a underdrive crank pulley i would get rid of it and go back to stock

i agree, unless the new one has the balancer lose it quick. also if he has a sound system in his car, underdrive pulleys are terrible for it.

Yeh its not good for the alternator or the battery.

yeah if it has a balancer but ive never seen any underdrive pully come with a balancer

yeah if it has a balancer but ive never seen any underdrive pully come with a balancer

http://www.theoldone.com/components/fluidampr/

Deff NOT cheap.