Civic ex

[fc1jay]

Honda civic 2017 ex 1.5T running phearable 1.5r . I can en éter map level 1 but map 1 level 2&3 out the cut car misfires when I drive above 45 or I push it . Headgasket was done with arp head studs . Car does enter limp mode with flashing cel then turns off and says multiple misfire ..could it be my coil pack ahevnt changed them in 4 years

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[marcusm86]

Honda civic 2017 ex 1.5T running phearable 1.5r . I can en éter map level 1 but map 1 level 2&3 out the cut car misfires when I drive above 45 or I push it . Headgasket was done with arp head studs . Car does enter limp mode with flashing cel then turns off and says multiple misfire ..could it be my coil pack ahevnt changed them in 4 years

id check spark plugs first and see how they look.

 

[fc1jay]

So spark plugs are new they are gapped to what the tuner told me to gap them too.

Factory or GENUINE (not amazon/ebay) NGK ILZKAR8H8S gapped at .026

 

[Chilly613]

Did you use your Hondata or KTuner to see what specific code the CEL was?

Since you already checked the plugs, could be the coils or maybe even fuel, like a clogged or even a bad injector. Also bad fuel can cause it too.

Also you got a 10th Gen Civic, just FYI.

https://www.civicx.com/forum/

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