Help with Aeromotive 1000 Pump

[1bad396ss]

I have a Boyd Welding tanks with the Aeromotive 1000 in-tank pump. While I have purchased and installed everything over the last 3 plus years, I am just now to the point of tuning everything in. My tuner cannot get the injectors to scale out even at idle. Had injectors flowed and tested - all good. Fuel pressure is 58psi at idle; however, as soon as the pump is powered down the fuel pressure drops to zero instantly (even during key on priming).

I think I have an issue with the pump. Something makes me think it can support 58 psi at idle - but I have a major volume issue (ie: it is simply not pushing volume up to the rails.

Aeromotive Pump -10AN out to -10 filter to Y- Block to -8AN into each rail, out of each rail into Aeromotive regulator with -6 return to tank.

Any other fuel injection system I have dealt with has a slow bleed of pressure after powering down - not an instantaneous dump to 0.

I don't believe the fuel regulator is the issue either as it will hold to he 58 PSI setting.

Any help / advice is greatly appreciated.