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Classic Fast Sbf wiring help.

Discussion in 'EFI Tuning Questions and Engine Management' started by BLOWN 95GT, Feb 26, 2019.

  1. BLOWN 95GT

    Joined:
    Oct 8, 2010
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    I bought a Classic fast a few months back to run in my 94 cobra. It is a sequential injection box with 4 stage N20 control, points out , and individual cylinder control. Inductive pickup (magnetic) crank signal input.
    The wiring harness I have has a few loose wires, and connections that I need to know where to run them to.
    I did a search on here, and also tried to setup a profile on the CPG nation forum but seems that the admin’s over there are no longer active so I’ve been waiting weeks for a email to be able to log in.
    If anyone could help I would truly appreciate it.
    I also need to buy a serial cable to run from the classic to the laptop usb, a cable for the external data log box, and a GM IAC like the Accel DFI 74770a if anyone know’s where I can find one.
    The wiring pins in question are:
    White wire C3
    Black wire R1
    Black wire S1
    White wire X1
    W1 looks like it was a green wire but is cut off flush with the ECU connector
    Y3, M2, M1 all go to what looks like a ground terminal just want to make sure before I hook it up
    Y1, Y2 also look like they are connected to a ground terminal just want to verify
    M3 is a red wire which runs to a fuse that is connected with a relay and another fuse.

    Also I know the classic box is setup to run 4 stages of nitrous but is there a way to run a turbo setup with it instead? Or should I just sell it and buy a different setup?
     
  2. Disney Lincoln

    Joined:
    Feb 14, 2003
    You SURE it's set up for nitrous? Mangrum ran carb/nitrous. He went to EFI and Blower. I don't recall him ever having EFI/Nitrous together.
     
  3. BLOWN 95GT

    Joined:
    Oct 8, 2010
    That’s what FAST said when I contacted them and had the numbers run on the box.
    It also came with 3 or 4 map sensors so I don’t know. I’m fixing to list it for sale though. I sold the 94 cobra that I was going to put it on the other day so don’t really need it now.
     
  4. BLOWN 95GT

    Joined:
    Oct 8, 2010
    I also got to looking through the software that you download off of the fast website to run it. I found a pin out for where the wires go in the help section of the software. Just wish I would have found it a few months ago
     
  5. BLOWN 95GT

    Joined:
    Oct 8, 2010
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    Here is the email that i sent and the reply that I got back
     
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