I used it b4, install lightened crank pulley in my E34 520 BMW, also coupled with elec fan... the old bmw shifu was murmuring at first that i was wasting my money so on so forth, but after we tested the car together he was impressed with the acceleration, he said can compete with 525.
My top speed still the same. The pulley is exactly same size as stock, just that much lighter... some aftermarket not only lightened but also became smaller then will have bad effect... anyway, all is just based on me beginner's exp, so pls check wif other senior ppl as well..
why come can gain hp some can not? we should choose the bigger pulley or smaller pulley or just same size with our original one?to be honest,don't expect a lot of power for this mod.sometime it came back nil on
dyno.some claim to add around 5-6hp.the main thing is acceleration or pick-up.
like what sky sifu said.imagine shaving up to 2kg on ur crank pulley.it can turn faster
w/o much effort.that the reason y this thing was invented.
choose the same size n lightened 1..why come can gain hp some can not? we should choose the bigger pulley or smaller pulley or just same size with our original one?
different engine,different characteristic bro.why come can gain hp some can not? we should choose the bigger pulley or smaller pulley or just same size with our original one?
more or less the same effect... depending how much u skim ur flywheel....is skimming flywheel same as lightened pulley? i meant the effect!:hmmmm: