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Thread: Converting a TBI system to MPI - wiring requirements.

  1. Default Converting a TBI system to MPI - wiring requirements.

    Hi, was just wondering what wiring requirements I will need if I want to change an Avenger/HP TBI system to MPI?
    From what I can gather, all I should need is an 8 cyl MPI harness like the one below:
    http://www.holley.com/data/products/...torharness.jpg
    And I think this just plugs into the main loom where the TBI unit would now connect?
    If someone could tell me if I am on the right track, or am missing something, it'd be much appreciated.

  2. #2
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    Quote Originally Posted by robertodonnell View Post
    Hi, was just wondering what wiring requirements I will need if I want to change an Avenger/HP TBI system to MPI?
    Purchase the fuel injectors, injector bungs, correct injector harness, threaded MAT sensor (Link), and remove the injector pod from the throttle body.

    http://forums.holley.com/showthread....-Throttle-Body (TBI-to-MPI Throttle Body Conversion)
    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. Default

    Thanks Danny, it looks like I was on the right track at least.
    Is it absolutely necessary to replace the TBI's IAT with a MAT? What benefit is there to do this?

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    Quote Originally Posted by robertodonnell View Post
    Is it absolutely necessary to replace the TBI's IAT with a MAT?
    No, it's not absolutely necessary.

    What benefit is there to do this?
    It's in the link I posted.
    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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