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Thread: Ram Jet 350 Holley HP Questions

  1. #11
    Join Date
    Dec 2009
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    Connecticut
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    Read "USB/CAN Communications/Dongle" end of page 4, and "USB Communications" beginning of page 5:
    https://documents.holley.com/techlib...reoverview.pdf (Specific updates for version V5 Build 110)
    https://www.holley.com/products/fuel.../parts/558-443 (Holley EFI 558-443 CAN/USB Communication Cable)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  2. #12
    Join Date
    Nov 2014
    Location
    Ont. Canada
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    1,276

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    Quote Originally Posted by alan91z28 View Post
    Also, I find occasionally that it is hard to connect with the USB connection, sometimes have to reboot computer, etc., to get reliable connection to ECU through the direct USB port. Is this a more stable connection?
    I also had connection issues with V5 Build 110. I went back to V5 Build 30 and connection issues were gone.

  3. #13
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    Dec 2009
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    Connecticut
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    https://forums.holley.com/showthread...752#post213752 (USB Link/Online Connectivity Issues)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  4. #14

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    So far so good. System continue to works great with most of the Learning pretty settled out now. Likely will be firming that up and tightening down on the allowed changes soon as it's driving great. Also, it was very easy to add a shift lamp output and also get speed into the datalogger.

    One hint on the speed input from my experience. My '88 Camaro has a mechanical speedometer, so I needed to use a cable drive box from Dakota Digital to drive it. To power that, I used a Dakota Digital SGI-5E to take the VSS input from the T-56 and then send a calibrated 8000 PPM to my cable drive box, and a 4000 PPM open collector (OC) output (output #4 on the SGI-5E) to the Holley ECU. To configure the Holley to recognize this input I set the input config parameters to the following:
    - 5 Pulses Per Rotation on the shaft.
    - 1.0 for the Gear Ratio.
    - 25.2 for the Tire Dameter.

    If you do the math, you'll see that this works out to ~4000 PPM input. Since my SGI-5E is taking into account my actual Gear Ratio, real tire size, etc., in its calibration and sending out a calibrated 4000 PPM. You need to set the Holley up to make sure it's receiving it as 4000 PPM. The combination of my parameters, I selected work out mathematically as ~4000 PPM. I know some people get confused on how this works, so figure I would post

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