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Running dual 450's too. 2nd pump on Hobbs switch. Went with Fore Innovations for the regulator. Have had no issues with it. Using Holley rails.
Plumbed from the tank to engine bay with -8 to a y-fitting. -8 from Y to back of both rails. Out of front of rails to regulator with -8. Regulator to ethanol content sensor in my case to old feed line.
630 RWHP on E85 on a 5.3. No fuel or pressure issues. Ignore piping to TB as fuel system was installed pre procharger install.
Running dual 450's too. 2nd pump on Hobbs switch. Went with Fore Innovations for the regulator. Have had no issues with it. Using Holley rails.
Plumbed from the tank to engine bay with -8 to a y-fitting. -8 from Y to back of both rails. Out of front of rails to regulator with -8. Regulator to ethanol content sensor in my case to old feed line.
630 RWHP on E85 on a 5.3. No fuel or pressure issues. Ignore piping to TB as fuel system was installed pre procharger install.
how did u wire the pumps? One relay or seperate for pumps
2 separate relays. 1 relay with built in diode around coil fired by ecm signal, 2nd relay is wired from same ecm signal but ground side of coil goes through Hobbs switch so once Hobbs closes at 4/5 psi it completes circuit and allows that 2nd relay to fire.
Diode around coil is important if using ECM signal as when relay deenergizes, the collapsing voltage from the coil can damage the ECM.
02-26-2017, 06:41 AM
