If you have the aeromotive FPR, you should be able to run the pump directly off 12V power and bypass the fuel controller. Check the max current draw of your AEM pump and make sure the wire gauge you select to run the pump is sufficient. I'd suggest running the pump off a high current relay switched by ACC power (don't forget a fuse). Try running the engine and measuring your air fuel ratio and monitor your fuel pressure.

One issue with running the pump without load modulation is that you'll likely need to retune the ECU. If you want to retain a fuel controller and not have as much retuning, here is an aftermarket one that works like stock but can handle a higher current fuel pump.

https://www.dccdpro.com/product/fuelpro/