Electric Power Steering Pump - 1967 Barracuda

Just for anyone who runs across this. The Volvo pump I'm using is a problem, not enough flow. I hooked a flow meter up to it and it runs just under 1 GPM in it's limp mode, so it's just fine for around town driving, but no good for racing / autocrossing. It looks like you need at least 2 to 2.5 GPM for the borgeson box, and I suspect more for the OEM box. The OEM specs are something like 2.7 GPM for the factory pumps at idle.

You can program an arduino to spoof the CANbus messaging for the Volvo pump to get it out of limp mode. You could even add a potentiometer input to the arduino to get variable pump speed or hook up a VSS input to have it do that automatically. That's assuming the Volvo can put out 2.7gpm when its out of limp mode.