Hi. I have an issue. When i drive 3-4 k rpm, CEL light came on for 5-6 second then disappear. The pending code was p0300 random misfire and p0305 cylinder 5 misfire. Replaced spark plug, spark plug wires. Nothing changed. And only first start in the morning, the engine die in 1-2 second after start. But second try it totaly normal. Normal drive is totaly normal. I have a cold air intake with new maf sensor, catless x pipe with long tube headers, custom engine and trans tune.
There is the code:
https://i.hizliresim.com/7QmB7P.png