PLEASE HELP!!!PO300 random misfire

[PC 2015]

Cats or no cats?

No catts

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[PC 2015]

Ngk 6510 gapped to 25. I'm gonna do a compression test and leak down test. I'm 99.99999% sure they will both pass no problem. But when they are all done if it's still there. I'm replacing my PCM. I just have a weird feeling that's what it is. The misfire happens on deceleration so I would think spark has nothing to do with it. The car runs strong doesn't break up nothing.

 

[Bioni007]

I don’t have random misfires any more after I did my crank relearn
When to the track last night did really bad but that’s bc I have 3:73 so I blow the tires away
Thanks for the help everyone

 

[SolarFlare]

I went to brisk RR12s. Helped with that code a lot.

 

[Bioni007]

I went to brisk RR12s. Helped with that code a lot.

I don’t really go WOT a lot but if I do end up getting that code again I’ll buy some brisk

 

[SSG 5.0]

New plugs coming. Ngk 6510

I just had that same code after the engine light came on. I took it back to the shop that installed my procharger p1x and ran a diagnostic. He smiled at me because he told me to change the plugs and go with the ngk. So far so good. I gapped my plugs to 0.028 according from a lot of members with a procharger themselves. Running pretty good right now and no codes came up yet.

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