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Originally Posted by 9secfirebird
to get the trans to go into OD you just need to put two wires going to the current diagnostic port, and wire a switch in the middle, and when third wines out, hit the switch and bang there is your fourth gear. ill talk to ya about it at island this weekend
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the tranny is mechanical, it will go into 4th without any wires. the jumper in teh obd port is to manually lock up the convertor when using a stock computer.