I'm getting a random misfire code. But only on cold starts when the outside temperature is under about 30 degrees F. Any idea's what would cause this to happen only on cold days?

 

I had the same issue, had a new tune done and it's all good now. Same exact thing you are talking about though, mine is a 9 also and I'm running the Cosworth M2's so it's a little choppy cold, it would only throw the P0300 if I tried to drive the car without letting it warm up for a couple min. when it was around 30 degrees.

 

I've also got the Cosworth M2's. I just back it out of the garage then let it warm up. Guess I need my tune worked on. Thanks for the Reply.

 

here is a good thread on how to disable the p0300 code with ecuflash https://www.evolutionm.net/forums/ec...0300-test.html