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Thread: AFR not getting along.

  1. #11
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    Quote Originally Posted by Cougarbird86 View Post
    What worries me is that the one side is reading around 16 or 17 AFR when cruising. Isn't that a problem?
    Did you not determine that the imbalance was the sensors and not the engine? If so, it does not matter. I run a Dominator with dual WBO2 sensors and the right side reads leaner than the left by .4 to .7. The difference follows the plugs, not the sensor itself or the engine bank. So I tune to the richer one and use the other bank for monitoring only.

  2. #12

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    Is there any way to configure the Terminator to read TWO WBO2 sensors? The software seems to be written to support it.

  3. #13
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    No, two wideband O2 sensors is Dominator EFI capability only.
    http://documents.holley.com/techlibr...useanddiff.pdf (Holley HP & Dominator ECU Differences)
    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, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 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/2800 RPM converter, M4602G aluminum driveshaft, 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. Default

    Quote Originally Posted by 81 TransAm View Post
    Did you not determine that the imbalance was the sensors and not the engine? If so, it does not matter. I run a Dominator with dual WBO2 sensors and the right side reads leaner than the left by .4 to .7. The difference follows the plugs, not the sensor itself or the engine bank. So I tune to the richer one and use the other bank for monitoring only.
    How would I go about determining which is at fault? I've already replaced & swapped sensors. How do I figure if a dual-plane manifold with throttle body injection is unbalanced?

  5. Default

    Quote Originally Posted by Danny Cabral View Post
    No, two wideband O2 sensors is Dominator EFI capability only.
    http://documents.holley.com/techlibr...useanddiff.pdf (Holley HP & Dominator ECU Differences)
    That is quite dumb. Even the handheld that came with Terminator, which was made for the Terminator, has the option to select two sensors.

  6. #16
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    That's because the Holley EFI software is the same for HP & Dominator EFI. Also, some Terminator EFI systems have the Dominator ECU for transmission control, hence their capability for two WBO2 sensors.
    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, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 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/2800 RPM converter, M4602G aluminum driveshaft, 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.

  7. Default

    So their must be something going on because these are my findings when reviewing two different Learn Tables on two different GF.

    Original Setup (Left bank Innovate, Right bank Holley [Innovate reads 2 points RICH, Holley maintaining +/- .5 accuracy])
    - The learn table is pretty much showing that every value is ADDING fuel to the base table.

    New Setup (Left bank Holley, Right bank Innovate [Innovate now reads 1-2 points LEAN, Holley maintaining +/- .5 accuracy])
    -The new Learn Table is pretty much showing that every value is either SUBTRACTING fuel to base table or adding a very very small amount.

    Conclusion: Either there is a problem or a huge coincidence. The original setup was running on the bank that the Innovate would soon read lean, hence that table adding fuel. The second setup ran on the bank that Innovate used to say was rich, and now the system is subtracting fuel. I hate not having my car here where I live. Did I stumble upon something? Wiped cam lobe? Varying cylinder pressure? Bad injectors?
    1986 Ford Thunderbird: Custom ROUSH 427 SBF/DART SHP Big Bore Block, AFR Heads, Holley Terminator EFI, Holley Smart Coils, custom valve cover coil bracket.
    "T-birds are like the red headed step son of the Fox body family...but we still love 'em the same."

  8. #18
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    You need to start looking at other things, like looking at your spark plugs, compression and/or leak-down test, and exhaust leaks in the side that's reading leaner.

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