I just recently put in a t 56 tranny in my 2005 ram 1500. Car originally automatic. Ever since I got it put in the ecu hasnt been working properly. I got the ecu replaced by dodge 3 times already, but still the rpms arnt dropping right, and it is locked at 89 mph and thats to low for me. what is the problem with this. If anyone can help it will be greatly apprciated