[chico]

Not sure myself,I contacted the expert...BYRON REYNOLDS of RACE SYSTEMS...Ford SEFI Custom Computer Callbration...This is his reply........

"There are multiple problems with the 2001 fuel system...here's the biggies...

1. The bucket the pump sits in is filled by a fluid powered fluid pump(a jet pump,like a jet boat). It lifts fuel into the bucket. This jet pump can only handle 120lph.

2.The pump is PWM controlled, like a light dimmer. Using different than OEM pumps can create problems...there are only a few pumps that work "sort of OK" on this returnless system.
The solution: For under 400rwhp, use a Walbro GSS342 in the tank and don't WOT the car for more than 20 seconds at a time.

If you don't like either of these limitations, then convert the car to a return fuel system and sump the tank. I can modify the chip to make the system understand a regulator and return line. We've done this before. Aeromotive sells sumped fuel tanks.

Byron"