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Thread: Using a 0411 PCM to run a TBI?

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  1. #1
    Fuel Injected!
    Join Date
    Oct 2013
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    42
    I did some more thinking on the fueling part. With no cam position sensor, the 0411 will be in batch fire mode. This means that it will try to fire each bank 1 time in 2 crankshaft revs. To get more pulses, I was thinking about hooking up an injector from each bank to the same TBI injector. Not ideal, but would at least get you 2 pulses ever 2 revs instead of just 1 pulse in 2 revs. I believe that the TBI system is designed to do 8 pulses in 2 crankshaft revs, but need somebody to confirm this.

    Does anyone know if hooking up the injector wires to the same TBI injector will cause any issues? The plan would be to solder in resistors to compensate for low impedence TBI injectors.

  2. #2
    Fuel Injected!
    Join Date
    Jun 2013
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    199
    This isnt going to work for a number of reasons. The biggest obstacle, the TBI injectors are low impedance. The 0411 injector drivers are high impedance only.

  3. #3
    Fuel Injected!
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    Nov 2017
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    Californiacation
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    57
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    834
    Quote Originally Posted by mecanicman View Post
    This isnt going to work for a number of reasons. The biggest obstacle, the TBI injectors are low impedance. The 0411 injector drivers are high impedance only.
    Put 4 high impedance injectors in parallel and check the ohms More importantly is that they are not driven peak and hold method but saturated circuit. Maybe that can be changed in the software, never looked or cared, lol.
    -Carl

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