I have a H22A w/ Automatic in an off-road project vehicle. At first, I thought it was not shifting into overdrive because it is only shifing twice. Now my thoughts are it may be skipping gears because it is geared so low. Between the final drive and the Land Rover differerential, about 15 to 1. The ECU and TCU thinks the vehicle is moving 150 MPH when in reality, 40 MPH. Dakota Digital has the SGI-5. Is that the route I should go, or are there better alternatives?