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09-21-2020, 05:17 PM
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#1 |
 
Drives: 2018 1LE SS Join Date: May 2020
Location: Jacksonville, FL
Posts: 6
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KR and Misfire count
Quick question, car is intake E headers and IM. Recently started detecting KR and a misfire count consistently showing anywhere from 2-10. No kr under wot, but shows a range of .5-6.7 sporadically for under part throttle (for example passing a car on the highway, getting up to speeds). Timing where it’s happening has been reduced, ran through two tanks of E from two different gas stations to rule out bad gas, and plugs look good. Does anyone have any ideas?
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18' MBM 1SS 1LE, PDR
2" Speed Engineering headers Lethalgarage flex fuel sensor LT2 non ported Intake manifold Rotofab-CAI mishimoto catchcan |
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09-21-2020, 05:54 PM
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#2 |
  
Drives: 2017 ZL1 Join Date: Jan 2017
Location: NJ
Posts: 905
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What are those mods? Intake, headers, intake manifold I think? What level of tuning was performed? What kind of instrumentation/gauges do you have?
Check spark plug wires to coils and plugs (should hear/feel one/two clicks on coil and one on spark plug). Check coil pack wiring, make sure that when you pull off each that there are no contacts recessed due to broken connector contact locks.
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2017 Camaro ZL1 Coupe M6 (847whp Dynojet on 93)
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09-21-2020, 05:54 PM
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#3 |
        
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,795
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Knock Sensor sensitivity needs adjusted in the tune.
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
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09-21-2020, 06:37 PM
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#4 | |
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Drives: 2018 1LE SS Join Date: May 2020
Location: Jacksonville, FL
Posts: 6
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Quote:
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18' MBM 1SS 1LE, PDR
2" Speed Engineering headers Lethalgarage flex fuel sensor LT2 non ported Intake manifold Rotofab-CAI mishimoto catchcan |
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11-02-2020, 07:27 AM
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#5 | |
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Drives: 2016 Camaro 2ss Join Date: Aug 2020
Location: VA
Posts: 5
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Quote:
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11-02-2020, 07:28 AM
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#6 | |
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Drives: 2016 Camaro 2ss Join Date: Aug 2020
Location: VA
Posts: 5
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Quote:
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11-02-2020, 11:45 AM
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#7 |
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Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,795
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Yes it's commonly done...these engines show false KR stock. They command 24 degrees and often your lucky to see more then 22 consistently.
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
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