Originally Posted by 1slow370

the v3 gear case is weak and its cfm numbers are overstated, the blower itself is meh before you even get to the crappy volute designs available for it. you run to big of a compressor to fast on a v3 and it will die eventually, the v4 has a better ratio, stronger gears, larger faster bearings and is built to be abused. i know lots of guys with v1 v2 and v3 blowers(or had lol) that the chargers have "broken in" and gotten louder cuz there bearings died. 928 mospo's main buisness is rebuilding the little **** case vortechs when guys realize they are blown. vortechs cfm numbers online are good guesses at best. there is a secret way to get a v4 to put out a torque curve at the same power level as a smaller charger that will murder the smaller charger.

Sent from my HTCONE using Tapatalk