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Thread: Dual 112-577 - ECU Setup Info Please

  1. #1

    Default Dual 112-577 - ECU Setup Info Please

    Need help to understand what is required to setup dual 112-577 throttle bodies on a mid rise manifold. Are these throttle bodies DBW or cable? Do you require 2x TPS & IAC motors? Is there a harness available, and which ECU will manage the setup, HP EFI or Dominator?

  2. #2
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    Quote Originally Posted by Smithy71RS View Post
    Are these throttle bodies DBW or cable?
    The Holley 112-577 throttle bodies are cable/linkage operated (not DBW).

    Do you require 2x TPS & IAC motors?
    No, use one TPS sensor and one IAC motor.
    https://www.accufabracing.com/thrott...lock-off-plate (IAC Block Off Plate)

    Is there a harness available, and which ECU will manage the setup, HP EFI or Dominator?
    No harness necessary, because the 2nd throttle body is just an air valve. HP or Dominator ECU can be used.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, 100HP progressive dry direct-port NOS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, 160A 3G alternator, Optima Red battery, 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

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    Thanks very much for the info. Just one other question; can an LS1 ECU be used, as that runs a cable linkage?

  4. #4
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    Quote Originally Posted by Smithy71RS View Post
    Just one other question; can an LS1 ECU be used, as that runs a cable linkage?
    If the LS1 harness uses the "stepper" type IAC motor and the same TPS sensor, then yes.
    http://www.summitracing.com/parts/HLY-112-577/?rtype=7 (Click 360° View)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, 100HP progressive dry direct-port NOS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, 160A 3G alternator, Optima Red battery, 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.

  5. #5

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    Thanks Danny, I'll go with the HP ECU, etc. Then I know I've got a solid platform to work with.

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