Anyone have experience with Rexxer ECU tuning. Was reading the article in the new ON and the symptoms described sure sound like what I'm going through with my 99RT, 37,000 mi. Popping on downs and the idle could be better. I set the valves and balance the throttle bodies myself so I'm pretty sure there right. Any feedback would be appreciated before I go out and spend $600.00 bucks on a Rexxer unit. Thanks