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Originally Posted by Jabberwocky
At high RPM is there a problem with the processing lag?
So is an ECU a dumb item that just puts an output from the memory address, or is there some computer processing involved?
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there is a processor, mh6211 for the early ones, h8 500 for the evo 5 and 6,mh 720 for 7 and 8's, not sure about the 9's presume its the same seen it flashes the same as 7's and 8's
the early stuff uses the processor for the input/output signals and uses the eprom for stored address's(answers) as to output a signal to the various sensors through the pinouts