[Megahurtz]

I wanted to follow up here incase this helps anyone in the future. There was no issue with the Katech parts themselves.

The issues my client was having:

#1) Very low fuel pressure on hot starts, causing stalling or stumbling.
- My customer replaced the low side feed line, unknowingly removing the factory check valve, and fuel was just draining back into the tank and emptying the low side line. They installed a check valve and it solved this issue.

#2) - Under WOT, low side fuel pressure commands 80psi but doesn't get much higher than 35psi. There may be an issue with the controller for the secondary pump that is causing it to not run and then pump 1 is just pushing fuel backwards through the second pump. I'm having the customer verify his wiring and secondary controller setup.

Essentially, the issues are not the fault of the fuel pumps themselves, but installation and/or wiring issues.