BUP do you have contact information? I have the same problem and would really like to send my PCM your way

see ray he was banned a long time a go for misconduct of forum rules

https://www.boatunlimited.com/

Hello There,

I replaced my PCM on the Mag 496 part 866090-003 with the Mercruiser one on their parts page 866090T05 -, It is working fine and all problems resolved , but i have feeling there is performance decline in top speed and acceleration- or their supposed not to be ? or the same Can anyone advise please I could not find the 866090-003 on mercruiser site 🙏