[RICK LAKE]

Cobra #3170 I have a vacuum controlled regulator in my fuel system. My system was setup for a blower setup with a Paxton. you need 1-3 pounds of fuel for every pound of boost you make. IMO it's the supply at a steady pressure more than the pressure of the Fuel. I was only going to 10 psi for the system. I have too many little issues with the setup and belt I was running. Lack of hood clearance at this time didn't help either. I now have a paxton hood and may down the road retry this setup. I have an 70 amp orginial Alt setup with external regulator. It is not enough because of the added things on the car I have run. I have the ECU, 3 cooling fans, 2 (255liters pumps) MSD 6AL, 2 (4") cooling fans under the hood, and trans and readend cooler in the near future. Like Freds car I am going to a 130A alt setup. This is needed to all the power I am now running. Amp gauge needs to be changed to a Volt Gauge. Some rewiring also will be needed. I do know from racing that my Alt can't keep up my battery at full charge (12.6-12.8 volts) and run all the other power components. My alt only puts out about 35-38 amps under 1000 rpms. Just the 3 fans, MSD, ECU and fuel pump Draw more power than this and drain the battery. At 10.2 volts my MSD will not fire the spark plugs. I did get a little side tracked but have found that dropping the fuel pressures only at idle rpms with large injectors, IMO helps at idle to fine tune the motor. I have no smoke of any kind when I hit the throttle and no delay of responce from the motor. The fuel pressure goes from 43-44 psi to 52-54psi under a drop of a vacuum signal to the regulator. IMO a believe in having way too much supply and volume to a fuel system. 2 1/2" seperate fuel supply lines with a fuel pump on each one and 1 return line of 3/8". My gas gets warm after a 20 minute race run, but has not cause any problems yet. I do run between 1/2 and 3/4 of a tank of gas going out for each run and come in with just under 1/2. This is straight pumped gas. Hope this help with your question.