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  • New Guy Issues

    Hey guys, bear with me here. I'm absolutely a newby. If this is something really dumb just say so. I can take it. So far, my WBO2 sensor bung is just strapped on. It's still leaking a little bit I'm sure. I can't find any other vacuum leaks. This is a base Config File that hasn't been tweaked and hasn't left the driveway yet. I'm trying to get it to run well enough to get it a couple of miles down the road to the exhaust shop. It's not even up to temperatures in this datalog. The temperature that shows on the handheld is considerably lower than the temperature that shows on my temperature gauge in the dash. By like 50°F probably. Every time I drop it in gear, it stalls out. I'm attaching a Config File and a datalog if anyone can take the time and look at it and help me better understand how to correct this. Thanks in advance, Mark. wednesday011823.zip
    Attached Files

  • #2
    https://forums.holley.com/showthread...898#post227898 (Holley Sniper EFI Replacement CTS)​
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, forged steel crankshaft & H-beam rods, forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration/.623" lift/114° LSA camshaft, TFS R-Series FTI Comp Ported intake, BBK 80mm throttle body, Holley Dominator MPFI & DIS, Holley 36-1 crank trigger, MSD 1x cam sync, PA PMGR starter, PA 200A 3G alternator, Optima 34/78 Red battery, 100HP progressive dry direct-port NOS, R134a A/C, Spal Dual 12" HP 3168 CFM fans, Frostbite 3-core aluminum radiator, Pypes dual 2.5" exhaust, off-road X-pipe, shorty headers, Earl's -6AN fuel system plumbing, Walbro 255 LPH in-tank pump & Pro-M -6AN hanger, S&W subframe connectors, BMR upper & lower torque box reinforcements, LenTech Strip Terminator wide-ratio Ford AOD, 10" 3000 RPM C6 billet converter, B&M Hammer shifter, Stifflers transmission crossmember & driveshaft safety loop, 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.

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    • #3
      I should have included that my setup is using a GM HEI distributor and setup as coil -. Stock mid '90s Vortec head Chevy small block 350, 700R4 transmission. The only vacuum lines I have are timing advance, brake booster and PCV. All this stuff is new and I've checked them for leaks and found nothing. The only leaks I can find are at the WBO2 sensor. I've been playing wack-a-mole with them trying to get it to level off so I can get it to the exhaust shop.

      Thanks for the link Danny. Do you think my setup is going lean or rich? The datalog trace is funny to look at. It goes up & down. The AFR & RPM lines look like a helix. Do you think after 10 years, they're still sending out a bad CTS?
      Last edited by macr0w; 01-19-2023, 07:46 AM.

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      • #4
        Originally posted by macr0w View Post
        The only leaks I can find are at the WBO2 sensor.
        Any exhaust leaks near or upstream of the wideband O2 sensor must be fixed.

        Do you think my setup is going lean or rich? The datalog trace is funny to look at. It goes up & down. The AFR & RPM lines look like a helix.
        This is why any exhaust leaks near or upstream of the wideband O2 sensor must be fixed.

        Do you think after 10 years, they're still sending out a bad CTS?
        Yes, I posted that CTS link for a valid reason.


        Overlay the datalog onto your Global Config File (GCF), and pay special attention to the center paragraph in blue print:
        Originally Posted by Danny Cabral
        Quick Datalogger Information:
        Always provide data, not just symptoms. Is the AFR & ignition timing optimized? Overlay the datalog onto your Global Config File.
        Ensure the Target A/F Ratio table is properly programmed for your engine. Ensure the ECU is "Learning" (Learn Table LINK).
        Scroll through the datalog to the problem area. Then look exactly where this happens on the Base Fuel & Timing Tables. Scrutinize:
        RPM, MAP, MAT, TPS, CTS, IAC, Target AFR, AFR Left, CL Comp, Ignition Timing, Duty Cycle, Fuel Flow, Fuel Pressure & Battery.

        Using the Holley EFI software (LINK), look at where the live cursor moves to during this occurrence, and
        manually tune that area of the Base Fuel Table (enrich or lean) & Base Timing Table (optimize ignition timing).


        I find the most helpful datalog function, is overlaying the datalog on your GCF.
        I'm in the habit of using the datalog Overlay feature every time I review a datalog.
        Click on "Datalog" (on the top Toolbar), "Activate Overlay", then "Open Data Log".
        You can literally "playback" a recorded event, and watch it as it happened on any screen.
        Minimize (shrink) the datalog window, and move it to the bottom of any GCF screen.
        Then click & scroll anywhere on the datalog, and watch it playback on your GCF (EFI software).
        http://documents.holley.com/techlibr...9r10543rev.pdf (Holley EFI Datalogger Instructions)
        https://forums.holley.com/showthread...s-amp-Datalogs (Datalog Information - Read "NOTES")
        https://www.youtube.com/watch?v=iqHO...C6FEA0BB99AF17 (How To Record & Email A Datalog)
        https://forums.holley.com/showthread...7531#post77531 (Closed Loop Datalog Tuning - Posts # 2, # 4 & # 6)
        http://forums.holley.com/showthread....2523#post62523 (Read 4th & 5th Paragraphs - Smooth Fuel Graph After Transfer Learning)
        May God's grace bless you in the Lord Jesus Christ.
        '92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, forged steel crankshaft & H-beam rods, forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration/.623" lift/114° LSA camshaft, TFS R-Series FTI Comp Ported intake, BBK 80mm throttle body, Holley Dominator MPFI & DIS, Holley 36-1 crank trigger, MSD 1x cam sync, PA PMGR starter, PA 200A 3G alternator, Optima 34/78 Red battery, 100HP progressive dry direct-port NOS, R134a A/C, Spal Dual 12" HP 3168 CFM fans, Frostbite 3-core aluminum radiator, Pypes dual 2.5" exhaust, off-road X-pipe, shorty headers, Earl's -6AN fuel system plumbing, Walbro 255 LPH in-tank pump & Pro-M -6AN hanger, S&W subframe connectors, BMR upper & lower torque box reinforcements, LenTech Strip Terminator wide-ratio Ford AOD, 10" 3000 RPM C6 billet converter, B&M Hammer shifter, Stifflers transmission crossmember & driveshaft safety loop, 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.

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        • #5
          Well, I finally got my exhaust leaks taken care of. Using a leaf blower and a spray bottle of soapy water I get no bubbles. Then just to be safe I went and bought a new CTS because of the discrepancy in temperatures. Even with the new sensor it's still way off. It's idling a little better. It'll stay running when you drop it into gear, but it does bog a little bit. I'm going to mess with it tomorrow I guess. I took a trace of what it was doing so I may post that if anyone cares to look at it. 😁

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          • #6
            Datalog and Config File from yesterday.
            Attached Files

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            • #7
              The CTS for my Dakota Digital gauge that has been installed for a couple of years and works well, and has been accurate and dependable. It's installed in the front of the intake near the thermostat housing.
              The CTS for the Sniper is installed in the rear of the intake on the drivers side beside the distributor.
              Yesterday in my testing the gauge in the dash showed 180°F. The gauge on the handheld showed 80°F.
              Danny, I went out and bought a new Standard CTS from O'Reilly after reading your post about the Holley supplied devices. Still no difference. Thoughts?​

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