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Thread: Installing a VSS Sensor with Holley EFI

  1. #11

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    OK, let's see if this makes sense, or if I'm just rambling.
    16,000 pulses per mile
    5280 feet in a mile

    It breaks down to 3.03030303 pulses per foot. To get the PPROT to be an whole number - 33 PPROT = 100 feet
    A tire size of 38.2" gives you a circumference of 120" = 10'
    A gear ratio of 10, times the circumference of 10', should give you that 100 foot total and the 33 PPROT.
    Does that sound right or did I just over complicate things?
    BTW, I would just go try it, but my truck isn't running just yet. I'm probably at least a month away from firing it up.
    Last edited by madramper; 04-23-2014 at 09:17 PM.
    1995 Black Lightning
    Twin Turbo build in the works
    Being built for Rally North America

  2. #12

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    Would a signal conditioner like the one below, get the job done to work with the HP? If it would, this seems like a nice way to get a speed input to the ECU, as well as another input to something like a traction control unit. http://jbperf.com/dual_VR/v2_1.html

  3. #13
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    Quote Originally Posted by raceoholic330 View Post
    Would a signal conditioner like the one below, get the job done to work with the HP?
    Why do you need a signal conditioner? The HP ECU accepts a Hall-Effect signal directly from the sensor itself.
    Does this device convert a VR sine wave signal to a square wave signal? Do you have an existing VSS sensor?
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  4. #14

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    I apologize, I did not specify the sensor I was planning on using. I would like to use my factory Ford VSS in my Tremec 5-speed, which has a sine wave output. The conditioner would make that a 0-5V square wave signal.

  5. #15
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    Quote Originally Posted by raceoholic330 View Post
    I would like to use my factory Ford VSS in my Tremec 5-speed, which has a sine wave output. The conditioner would make that a 0-5V square wave signal.
    In that case, it should work fine.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  6. #16

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    Quote Originally Posted by raceoholic330 View Post
    I apologize, I did not specify the sensor I was planning on using. I would like to use my factory Ford VSS in my Tremec 5-speed, which has a sine wave output. The conditioner would make that a 0-5V square wave signal.
    Just wondering if you ever tried this, and if it was successful or not?

  7. #17
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    Quote Originally Posted by raceoholic330 View Post
    Would a signal conditioner like the one below, get the job done to work with the HP? If it would, this seems
    like a nice way to get a speed input to the ECU, as well as another input to something like a traction control unit.
    http://jbperf.com/dual_VR/v2_1.html
    Quote Originally Posted by Danny Cabral View Post
    Why do you need a signal conditioner? The HP ECU accepts a Hall-Effect signal directly from the sensor itself.
    Does this device convert a VR sine wave signal to a square wave signal? Do you have an existing VSS sensor?
    Quote Originally Posted by raceoholic330 View Post
    I apologize, I did not specify the sensor I was planning on using.
    I would like to use my factory Ford VSS in my Tremec 5-speed, which has a sine wave output.
    The conditioner would make that a 0-5V square wave signal.
    Quote Originally Posted by Danny Cabral View Post
    In that case, it should work fine.
    Quote Originally Posted by FPSeth View Post
    Just wondering if you ever tried this, and if it was successful or not?
    I'm also curious if this was successful. If so, it's a great solution for HP ECU users (installation LINK). If not, maybe THIS. Another interesting idea: LINK.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  8. #18

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    Danny, how would you configure the I/O if using a stock speed sensor on a F-body T56? Andrew

  9. #19
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    Quote Originally Posted by andrewb70 View Post
    Danny, how would you configure the I/O if using a stock speed sensor on a F-body T56?
    In the Custom I/O ICF, select "Digital Speed" for a Hall-Effect type sensor, or "IPU Speed" for a VR/Magnetic sensor. Name it, Enable it & Configure it.
    http://forums.holley.com/showthread....8389#post58389 (How To Create A Custom Input/Output)

    EFI Software Help Information/Instructions:
    ‒ On the top Toolbar, click "Help" & "Contents". This opens all Help topics.
    ‒ When navigating the software, click "Help ?", drag it to any parameter and click again.
    ..This automatically opens the definitions for that specific parameter.
    ‒ Tuning information can be read by clicking the F1 key, when you're viewing any screen.
    http://documents.holley.com/techlibr...10555rev16.pdf (Holley EFI Wiring Manual)
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  10. #20

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    Quote Originally Posted by Danny Cabral View Post
    In the Custom I/O ICF, select "Digital Speed" for a Hall-Effect type sensor, or "IPU Speed" for a VR/Magnetic sensor. Name it, Enable it & Configure it.

    EFI Software Help Information/Instructions:
    ‒ On the top Toolbar, click "Help" & "Contents". This opens all Help topics.
    ‒ When navigating the software, click "Help ?", drag it to any parameter and click again.
    ..This automatically opens the definitions for that specific parameter.
    ‒ Tuning information can be read by clicking the F1 key, when you're viewing any screen.
    http://documents.holley.com/techlibr...10555rev16.pdf (Holley EFI Wiring Manual)
    So is the T56 sensor an "IPU Speed" sensor? It only has two wires. Andrew

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