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Thread: 16197427 - no rev limiter or fuel cutoff? Correct?

  1. #1
    Fuel Injected! babywag's Avatar
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    16197427 - no rev limiter or fuel cutoff? Correct?

    I ask because just had a brain fart...

    So the 7427 recognizes a 4k vss signal, just registers as 2x actual speed.
    The VSS is "mostly" so the pcm understands when vehicle is moving or idling?
    Does it really matter/have any effect on driveability if someone were to just use a 4k signal to pcm?
    Tony

    '88 Jeep Grand Wagoneer (aka Babywag)
    '67 Jeep J3000
    '07 Dodge Magnum SRT8

  2. #2
    Fuel Injected! brian617's Avatar
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    All of the 7427 .bins I've seen have fuel cutout speed limiter. There should be a table for fuel off and fuel on vs mph.
    89 K1500 Scottsdale 5.7L 5spd 3:42 RamJet cam Dart iron TBI heads 427 PCM swap
    95 C2500 Cheyenne 6.5L turbo diesel 4L80e 4:10 DB2-4911 Manual pump conversion 0411 PCM trans control 2Bar COS
    05 Outback XT 2.5L turbo gas auto

  3. #3
    Fuel Injected! babywag's Avatar
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    Ok, found 'em...and changed 'em.

    I think I'll just run it w/ 4k to the pcm then unless anyone objects or has other reason(s) to believe something won't work properly?
    No transmission controls as I have a 727 in the Jeep.
    Tony

    '88 Jeep Grand Wagoneer (aka Babywag)
    '67 Jeep J3000
    '07 Dodge Magnum SRT8

  4. #4
    Fuel Injected! brian617's Avatar
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    I'm using mine in a 89 model manual trans truck with the only speed input coming from the cluster.
    89 K1500 Scottsdale 5.7L 5spd 3:42 RamJet cam Dart iron TBI heads 427 PCM swap
    95 C2500 Cheyenne 6.5L turbo diesel 4L80e 4:10 DB2-4911 Manual pump conversion 0411 PCM trans control 2Bar COS
    05 Outback XT 2.5L turbo gas auto

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