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Thread: KR Issues

  1. #1

    KR Issues

    Im getting some KR at top of second gear and a bunch at bottom of third. Is there anyway to get rid of this KR without killing my timing anymore than i already did. Heres my scan and Tune. Help me out guys.
    2003 Galaxy Silver Limited Edition GTP
    Mods: 2.8 MPS | S2IC | XP CAM | GEN V | 65# | E85 | TOGS | N* TB | HPT PRO | Impala Brakes | BUILT TRANS w/3.29 GRS

    2017 Chevrolet Silverado LTZ 6.2
    Mods: HPT PRO

  2. #2
    Advanced Tuner coachcrow56's Avatar
    Join Date
    Dec 2004
    Location
    Longview, Texas
    Posts
    305
    Retune your MAF above 6500 to add more fuel.
    2.8/3.0/3.2 Pulley/ZZP CAI/1.6 HS Rockers/Hi Energy Comp Cam 76-802-9/LS7 Lifters/ZZP Stage 2 Intercooler/TOG Headers/Triple Edge Performance Stage 3 Transmission/3.29 Ratio/NGK TR6ix IRIDIUM .40 GAP/ZZP Fuel Rails/ZEX 100 shot NOS/GMPP Sway Bars/KYB Adjustable Struts/Power Stop Performance Pads/Rotors

  3. #3
    Well im trying to have a constant AFR of 11.5. Im thinking my fuel pump isnt keeping up because looking at my scan it starts leaning out at top of second and bottom of third where im getting KR. Im still of stock pump with no rewire.
    2003 Galaxy Silver Limited Edition GTP
    Mods: 2.8 MPS | S2IC | XP CAM | GEN V | 65# | E85 | TOGS | N* TB | HPT PRO | Impala Brakes | BUILT TRANS w/3.29 GRS

    2017 Chevrolet Silverado LTZ 6.2
    Mods: HPT PRO

  4. #4
    Advanced Tuner coachcrow56's Avatar
    Join Date
    Dec 2004
    Location
    Longview, Texas
    Posts
    305
    I am still running my stock fuel pump, and so far no problems. When you scan, check your Injector Pulse rate to see if your injectors are maxed out----than could make it lean if its not getting enough fuel.
    2.8/3.0/3.2 Pulley/ZZP CAI/1.6 HS Rockers/Hi Energy Comp Cam 76-802-9/LS7 Lifters/ZZP Stage 2 Intercooler/TOG Headers/Triple Edge Performance Stage 3 Transmission/3.29 Ratio/NGK TR6ix IRIDIUM .40 GAP/ZZP Fuel Rails/ZEX 100 shot NOS/GMPP Sway Bars/KYB Adjustable Struts/Power Stop Performance Pads/Rotors

  5. #5
    My duty cycle never goes above 80% so i believe my injectors are fine.
    2003 Galaxy Silver Limited Edition GTP
    Mods: 2.8 MPS | S2IC | XP CAM | GEN V | 65# | E85 | TOGS | N* TB | HPT PRO | Impala Brakes | BUILT TRANS w/3.29 GRS

    2017 Chevrolet Silverado LTZ 6.2
    Mods: HPT PRO

  6. #6
    Tuner in Training
    Join Date
    Jul 2010
    Posts
    36
    well looking at your tune your high octane table looks untouched and your low table looks really low have you modified your high table? i would at least try it

  7. #7
    Yes i added timing to my High Octane table i didnt want to touch Low Octane so when i do Knock it cuts my timing.
    2003 Galaxy Silver Limited Edition GTP
    Mods: 2.8 MPS | S2IC | XP CAM | GEN V | 65# | E85 | TOGS | N* TB | HPT PRO | Impala Brakes | BUILT TRANS w/3.29 GRS

    2017 Chevrolet Silverado LTZ 6.2
    Mods: HPT PRO