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Well so far I have replaced the hall effect, ASD relay, coil and computer and it still won't start






.....Then I'm going to say that you have an open (corroded) wire in the main harness to the computer. It's not uncommon for battery residue to contaminate the harness...which causes havoc on wiring splices within. I'm willing to bet that there is a 12V feed wire to the computer that is rotten.... (White and red wire)

Start opening the harness near the battery and continue along till you're positive that all is OK.