1. The Turbo Forums - The discussion board for both hard core and beginner turbocharged vehicle enthusiasts. Covering everything from stock turbocharger cars, seriously fast drag racers, boats, motorcycles, and daily driver modified turbo cars and trucks.
    To start posting in our forums, and comment on articles and blogs please

    IF YOU ARE AN EXISTING MEMBER: You can retrieve your a password for your account here: click here.

Piggyback stock ecu with Holley efi

Discussion in 'EFI Tuning Questions and Engine Management' started by Jem2691, Aug 27, 2016.

  1. Jem2691

    Joined:
    Aug 23, 2015
    I have 01 mustang 4.6 2v with a 80mm turbo. Does anyone know how to piggyback the stock ecu with a Holley efi so I can retain my factory gauge cluster?
     
    Jem2691, Aug 27, 2016
    #1

  2. TTF/Ken Staff Member

    Joined:
    Dec 31, 2011
    Any reason you can't use SCT or HP Tuners with the stock PCM for your EFI, since it's already there?
     
    TTF/Ken, Aug 31, 2016
    #2

  3. Jem2691

    Joined:
    Aug 23, 2015
    The holley system is more efficient and has a faster processing speed. I can run higher rpms and boost using Ls coils without spark blowout. Also its suppose be easier to tune.
     
    Jem2691, Aug 31, 2016
    #3

  4. TTF/Ken Staff Member

    Joined:
    Dec 31, 2011
    Okay, just wondering. For most applications, boost included, the factory PCM is up to the task, but if you're wanting to spin it faster and go higher boost I can see going with something else. Though GMS coils and their solid core spring replacements can help a little with the spark issue, as well as swapping in a faster EEC-V. I guess it all depends on how fast you plan to spin the motor and how high of boost you're aiming for ?
     
    TTF/Ken, Aug 31, 2016
    #4

  5. ashford

    Joined:
    Nov 24, 2008
    iv'e done a a few times with megasquirt. you just need to add a seperate ect for the holley then hopefully share the crank sensor without issue. the ford ecu has a high resistance input on the crank sensor so it shouldnt be an issue. the factory pcm does not need the cam sensor to work
     
    ashford, Aug 31, 2016
    #5

  6. Jem2691

    Joined:
    Aug 23, 2015
    Thanks
     
    Jem2691, Aug 31, 2016
    #6
Loading...
Similar Topics - Piggyback stock ecu Forum Date
Trying new way to tune a safe AFR with a stock EEC, no chip or piggyback EFI Tuning Questions and Engine Management Dec 20, 2009
Converting my 2-step ignition box to 3-step using a piggyback limiter EFI Tuning Questions and Engine Management May 16, 2010
Megasquirt piggyback for extra injectors on TBI EFI Tuning Questions and Engine Management Jan 15, 2007
Loading...