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Thread: Timing control at low RPM cruise?

  1. #11

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    Take a look at the instructions at this LINK. You essentially install EFI 4 on the same laptop as used with the Sniper EFI software and build a base config. This version builds a much better Base Timing Table. You then copy & paste into the Sniper EFI timing table. This coupled with the diagram above showing Idle, WOT, Cruise, Rarely Used etc., was a big help for me. It made the truck run much better getting me much closer to a good baseline config, from which I could then edit, test, review datalog - repeat.

  2. #12
    Join Date
    Oct 2017
    Location
    Los Angeles
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    399

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    Here's a link to a video showing you how to accomplish the above post. (LINK)

  3. #13

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    That would work, but it seems overly complicated. It's easier to just pop the SD card out of the handheld and put it into a desktop computer that has the Sniper EFI software on it. Then you can easily see and modify the full timing table. Once you've made your changes then upload the file back to the ECU and go for a drive.

  4. #14

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    Thanks for the tips. Based on the feedback in this thread, yesterday I ordered a USB-CAN cable so I can connect the laptop to the Sniper.

  5. #15

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    Quote Originally Posted by stinkfinger View Post
    Thanks for the tips. Based on the feedback in this thread, yesterday I ordered a USB-CAN cable so I can connect the laptop to the Sniper.
    This will greatly improve your tuning game because you'll be able to have a laptop in the vehicle and make changes in real time. Andrew

  6. #16

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    I did the HP EFI timing curve transfer to my Sniper EFI software and it instantly ran better then it ever had. I’d recommend doing it.

  7. #17

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    I did the HP EFI timing curve transfer, and it was definitely a big improvement. Haven't tried live tuning yet, still trying to figure out how to do that without winding up in the ditch. :-)

  8. #18

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    This question by the poster is what I'm trying to figure out. I understand it'd be better to use said EFI software to build a better curve setup. And that'll have to be in the future because I don't have a PC. I have an Apple and don't have funds to buy one. And right now with all the stay at home mess, I don't want to go around to borrow someone's PC, so is there a workaround for the cruise setup? Richard

  9. #19
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    25,080

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    No, refer to posts #2 & #5 above.

    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 T/W 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, 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, -6AN fuel system plumbing, Walbro 255 LPH pump, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, 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 M/T Street Comp tires.

  10. #20
    Join Date
    Oct 2016
    Location
    Albuquerque, NM
    Posts
    122

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    Quote Originally Posted by richie49 View Post
    This question by the poster is what I'm trying to figure out. I understand it'd be better to use said EFI software to build a better curve setup. And that'll have to be in the future because I don't have a PC. I have an Apple and don't have funds to buy one. And right now with all the stay at home mess, I don't want to go around to borrow someone's PC, so is there a workaround for the cruise setup? Richard
    There are two ways to install the Sniper software on a Mac. Either way you'll need a copy of Windows to install with it (or even get a free version). The first option is you can install a Virtual Machine. At first I used the free https://www.virtualbox.org/ on my iMac with SD card tuning. I then bought a USB CAN Bus cable and a Mac laptop and installed Boot Camp on it (it's included with MacOS), and can now tune on the fly while idling in the garage or driving around. Boot Camp will let your Mac dual boot into Windows. If you already have a laptop you'll just need the CAN Bus cable, otherwise you can tune by SD card on either a desktop or laptop.
    1968 Camaro, 383 with Dart Pro 1 aluminum heads and Comp Cams roller cam, Holley Sniper EFI with Dual Sync distributor, Muncie M21 4-speed transmission, 3.73 12-bolt Eaton posi differential.

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