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Thread: Slight flat spot after letting the clutch out.

  1. #1

    Default Slight flat spot after letting the clutch out.

    The Sniper EFI seems to be working fine, except there seems to be a small hiccup after letting the clutch out from a stop. It's momentary but annoying. Is this an adjustment to the fuel enrichment that needs to be done?

  2. #2
    Join Date
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    In the Sniper EFI software, look at where the live cursor moves to (Base Fuel Table) when this happens, and lean or enrich that area. You can also record & review a short datalog of this AFR occurrence, if need be. It will most likely reveal the problem.
    https://www.holley.com/support/resou...Fuel_Injection (Sniper EFI Software & Holley 558-443 CAN/USB Dongle)
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  3. #3

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    Quote Originally Posted by Firebob View Post
    The Sniper EFI seems to be working fine, except there seems to be a small hiccup after letting the clutch out from a stop. It's momentary but annoying. Is this an adjustment to the fuel enrichment that needs to be done?
    Hey Bob, I had a bit of that. Dialing up the "AE vs MAP Rate of Change" value took care of it for me. What it does is gives the engine a bigger shot of gas, as it senses the increased load. Also turning the "AE RoC Blanking" value down, maybe 5 or 6, helps the sensitivity of the MAP sensing. I have a 4x4, so there is a lot of low RPM clutch feathering type of stuff going on. I don't know a lot, but it worked on mine. B.

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