I believe I am having ecu/ pcm issues, reason being is because I have had my transmission replaced multiple times, and just picked the car up from having it replaced yesterday with an AV6. Not too long into driving it started to shift into second as if I was flooring the car. (The same things it had been doing on the previous transmissions) However, other times it shifted perfectly normal. I brought the car home and started looking into symptoms that I’m having, which are, random/ all cylinders misfiring but no constant misfire (or none at all), erratical shifting, poor fuel economy, & minor electrical issues. Dash lights on are VSA, ! Light, abs, (however these are not on when starting the car and usually come on about 15 minutes into driving and goes off again after turning off the car) and occasionally the CEL comes on & flashes when allowing the car to shift at almost redline (so flooring it) and then goes off or sometimes stays on. Any info on whether these issues could stem from the ECU/ PCM would be greatly appreciated.