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Thread: Holley 12-302 '64-'67 in-tank fuel pump.

  1. #1
    Join Date
    Jun 2013
    Location
    Calgary, Alberta
    Posts
    112

    Default Holley 12-302 '64-'67 in-tank fuel pump.

    I've been running a Terminator EFI on my LS engine, but I'm switching over to MPFI using the Weiand LS1 intake. I picked up the new in-tank pump setup, which is internally regulated at 58 psi. With the MPFI using 43 psi, is it just a matter of changing the pressure settings in the HP ECU to 58 psi, and let the ECU handle everything or ?

  2. #2
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    22,711

    Default

    Yes, verify 58 psi and enter that in Actual System Pressure (Engine Parameters).
    http://forums.holley.com/showthread....ents-Read-This (Initial Checks & Adjustments - Read Step #2)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  3. #3
    Join Date
    Jun 2013
    Location
    Calgary, Alberta
    Posts
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    Default

    Awesome! Thanks Danny!

  4. #4
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    22,711

    Default

    You're welcome. Think of the EFI ECU & fuel pressure regulator as a 'matched set'. They both have to be set to the same psi.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

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