Originally Posted by Johnny Wishbone

Most of the guys use the fan and have it pointed towards the motor. The tap off the sc is direct to the batteries so the fans really scream and work very well for motor cooling, plus it makes for a much neater install, wires wise. You really don't need it from 13.5 up, haven't had any heat issues yet.

The gearing might be backwards. At the IIC the 17.5 ran a 3.8 fdr on a SPV3, and its sort of like a pulse, but if I where running a pulse I would change out the rotor to one of the torque units and play with gearing from there, this really woke up my pulse, the rotor in them just dosen't feel right at least for the tracks I've run on.