Rusty67 20+ Year Stangneter Dec 3, 2002 3,749 37 109 LA, CA Sep 26, 2006 #1 Sep 26, 2006 #1 Is there a *free* way I can change the gear ratio in my ECU so that my spedo/tach are correct or do I have to buy one of those over priced POS tuning boxes ?
Is there a *free* way I can change the gear ratio in my ECU so that my spedo/tach are correct or do I have to buy one of those over priced POS tuning boxes ?