I'm using (well intend to use) their EFI. Part # 35670

I followed the pro flo 4 forum for a while and it seemed mostly positive feedback. Some guys running cams with 7-8in vacuum at idle with no reported issues.

System is rated at 825hp so you would think it could take some cam......but if not, I'll change the ecu it to something with full access to all parameters. (Dominator?)

Would still be able to use the entire setup minus the ECU and wiring harness and it's not a bad deal for those parts alone at the price I bought it for.