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Thread: Dead ECU?

  1. #21

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    Thanks Danny. I read the link and I'm just not getting anywhere. I've read so much that's it's all just a jumble in my head now. My system is a Sniper EFI Master Kit with HyperSpark distributor & CDI box. Holley to me is misleading when they say it's a plug & play system. There's so much more to learn and for old school guy like me it's slow going, I'll never be connecting to my computer, I got to do it with the handheld. Thanks again.

  2. #22
    Join Date
    Dec 2009
    Location
    Connecticut
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    24,100

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    Quote Originally Posted by NAVY7797 View Post
    My system is a Sniper EFI Master Kit with HyperSpark distributor & CDI box. Holley to me is misleading when they say it's a plug & play system.
    Yeah, that's pretty much plug & play for a Sniper EFI with ECU timing control.

    There's so much more to learn and for old school guy like me it's slow going, I'll never be connecting to my computer, I got to do it with the handheld.
    I just asked if the ignition timing is synchronized. You need a timing light for that, not a computer.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 11.8:1 comp, TFS R-Series FTI ported intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, FPP aluminum driveshaft, FPP 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 MT tires.

  3. #23

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    Yes, I know I need a timing light and I have one and I've followed all setup procedures to a T.

  4. #24

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    Latest update: I changed WBO2 sensor, and then to hotter plugs, and all is running fine. The only question I have now is cruising Timing and WOT timing settings. Presently I'm set at 23° on cruising and 32° WOT.

  5. #25
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    24,100

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    The only thing this EFI system self-tunes, is the Base Fuel Table, via the Learn Table.
    You're responsible for everything else, especially the Target A/F Ratio Table & the Base Timing Table.
    A dynamometer is the only real way to determine the optimum ignition timing for your performance engine.
    Most people research it, or just "know" what their engine needs or likes. Especially if it's a popular engine.
    https://forums.holley.com/showthread...8640#post88640 (Target A/F Ratio Table & Base Timing Table Reference)
    A timing light is required.

    Originally Posted by Danny Cabral
    The Target Air/Fuel Ratio Table & Base Fuel/Timing Table (and MAP kPa & RPM axes/scales) should be configured using the Sniper EFI software:
    In the Sniper EFI software (LINK), Target Air/Fuel Ratio Table (Fuel ICF) & Base Timing Table (Spark ICF), select "2D Table" Type (not "Simple").
    The Target Air/Fuel Ratio Table & Base Timing Table can then be properly configured & tuned for any engine.
    https://www.holley.com/support/resou...Fuel_Injection (Sniper EFI Software & Holley 558-443 CAN/USB Dongle)
    https://forums.holley.com/showthread...679#post100679 (Sniper EFI Optional Comm/Data Cable Accessories)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 11.8:1 comp, TFS R-Series FTI ported intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, FPP aluminum driveshaft, FPP 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 MT tires.

  6. #26

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    Quote Originally Posted by NAVY7797 View Post
    Latest update: I changed WBO2 sensor, and then to hotter plugs, and all is running fine. The only question I have now is cruising Timing and WOT timing settings. Presently I'm set at 23° on cruising and 32° WOT.
    32° is okay for WOT, but cruising should be more. Cruise is usually 6° to 10° more than WOT, so I'd plug in 40° for your engine and take it for a drive.

  7. #27

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    Thanks for the reply AndyF & Danny.

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