2012 ram express have gone to 4-11 rear gear and need to calibrate speedo. truck has edelbrock supercharger and download, i do not want to disturb the edelbrock ecu flash. is there a way to correct the speedo only???
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.