Happy New Year, Anthony!
From all that I've read and am aware, 4288's are S_LL_OOO_WWWW at 160 baud. The difference in processing speeds between black connectors ECMs and red/blue PCMs was my main reason for opting to go 8625 PCM. However, the side-track foray we took with the 7747 ECM was beneficial to determine the sensors and existing systems, i.e., ignition, fuel pump/relay/regulator, etc. were operating properly.
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