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Thread: Let me help you with Injector End Angle.

  1. #11

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    I think Danny knows more than I do about that. It's called lean cruise. There should be a few hits on the search. Of course, you need individual coils to do it. Here's some info: http://www.hiredgunracecars.com/lean-cruise.html

  2. #12
    Join Date
    Dec 2009
    Location
    Connecticut
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    Holley's base calibrations are not designed for good fuel economy.
    Good fuel economy is a direct result of the fine-tuning performed on the EFI system.
    NOTE - I've found the following EFI tables to be the most significant areas for improving fuel economy:
    Target Air/Fuel Ratio Table (too rich in cruising area).
    Ignition Timing Table (not enough advance in cruising area & light acceleration area).
    Acceleration Enrichment Tables (way too rich once Fuel Table is self-tuned).
    Coolant Temperature Enrichment & A/F Ratio Offset Tables (base calibrations too rich).
    https://forums.holley.com/showthread...8640#post88640 (AFR & Timing Information)
    http://forums.holley.com/showthread....3038#post33038 (Detailed Crank Trigger/DIS Conversion Information & Reasoning)

    Here's one good example:
    http://www.carsandparts.com/en/exper...-simple-1.html (Read "Dyno and Drive" segment - 16.5 MPG with an 860HP/742TQ 555" BBC)
    WOT power and cruising economy, are two separate segments of the Target A/F Ratio Table, so you can optimize both.
    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.

  3. #13

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    Danny you're awesome, now let me do some tables for you.

  4. #14
    Join Date
    Dec 2009
    Location
    Connecticut
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    27,499

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    Thanks for the compliment. Hopefully, I'll contact you this Fall season; I'm just too busy this Summer.
    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.

  5. #15

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    Danny, the timing table picture in your link doesn't show up, but the other two do. Looks like you hit 40°?

  6. #16
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    Connecticut
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    The link works for me. Yes, I'm at 40° at cruise.

    Magnifying screen: hold "Ctrl" key & press "+" key.
    Restore: Firefox - hold "Ctrl" key & press "0".
    Restore: Internet Explorer - hold "Ctrl" key & press "".
    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.

  7. #17

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    The graph does, the table does not. EDIT: That's odd, it works fine in IE not in Firefox.
    At 40° you may not need individual coils. Depends on how the rotor is phased.

  8. #18
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    27,499

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    I don't have a rotor, I run the Holley EFI waste-spark distributorless ignition system.
    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.

  9. #19

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    Quote Originally Posted by TBART1970 View Post
    I agree. Any experience with higher ignition timing and leaner AFR at highway cruise for better economy? (I know 548 ci & 740 horsepower does not spell economy). I'm trying to look at the data and decide at what kPa range to make changes to. I won't do this until I let it Learn for a while with the new IEA table. Next time I drive it, I'll change the Advanced Control to 3. I'll only make one change at a time (trying not to shoot myself in the foot again). What do you think of the AFR table in general?
    I only really know what SBF engines like. Is yours a big block Ford? That's what Danny has.

    Quote Originally Posted by Danny Cabral View Post
    I don't have a rotor, I run the Holley EFI waste-spark distributorless ignition system.
    Not sure if Tom would need individual coils at 40° or not. Without boost he may be OK.

  10. #20

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    Big Block Chevy, looks like this:
    https://www.summitracing.com/parts/edl-47550
    Last edited by TBART1970; 07-10-2018 at 06:07 AM.

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