This is much a question for me as anything (trying to figure this out as well; don't want to derail the thread thou).

It seems from what I have read its split where to mount the regulator. Some seem to like as close as possible to the fuel rails / carb on the theory it keeps fuel pressure more constant. The drawback being the possibility of heating the fuel more, which is why some like it mounted at the rear of the car.

What about mounting the regulator on the firewall using some insulation on the lines and a fuel cooler back on the return line near the tank (or where ever you can fit it)?

Also Aeromotive has pump controller that slows a pump down at idle to reduce the volume at idle, less chance of heating the fuel on the longer cruises which is usually where the fuel heating / vapor issues expose themselves?


Thanks!

I`m a dummy at this, but I have read quite a bit on this subject, so I`ll give you the info I have come up with on your question.

If your running a cooler on the return line, then mounting the regulator in the engine bay, I think from my research, would be the best place.

The fuel controller you mentioned lowers the voltage going to the pump. That in itself can cause problems to the fuel pump. What is needed is a PWM (pulse width modulator) that sends about 12,000 pulses of voltage to the pump, which seems to be the best way to go from what I have read. There is an aftermarket pump that is internally pwm modulated. I`ll have to dig that pump up for you to see, but it`s for a fuel injected motor. I have yet to find an external pwm module to control the speed of the pump at lower rpms. I believe this is how late model factory vehicles control their fuel pumps

Here`s the pump I was talking about. I just may buy this pump and not use the walbro I have

http://sctuned.com/fuelab/fuelabprod.../i-213679.aspx

Do I need to add a filter between the main tank and the low pressure, holley red pump, or can I get by with the filter sock on the fuel sender? I have a 10 micron filter to go before the high pressure pump after the surge tank.

sock should be fine. You want a 100 micron pre-filter, not 10 micron before the pump. 10 micron is for after the pump only, too restrictive before the pump.

Jody

Ok, so I have a 10 micron filter to go after the pump between the pump and the injectors. Do I put the filter before the regulator? Do I need to get a 100 micron filter to place before the main pump? I was assuming the sock on the fuel sender would take the place of the 100 micron filter.