I recently installed the new CTS2 insight on my 2015 F250. I am having trouble getting accurate speeds as well as accurate MPG. I am showing approx. 2 to 3 mph less on the CTS than what I am actually going. I also am showing an average MPG of like 30 which would be great if it were true but I am hand calculating approx. 16 to 19 depending on the type of driving. I have tried setting the tire size on the CTS2 but it does not change anything. The CTS2 is paired with an SCT X4 and IDP tunes. No *** or EGR and no limit stage 2 intake. I also show that the X4 only allows me to set my tire size to 34 and my factory tires are actually 34.1. I am running stock 20s and stock tires.
Any advise or solutions is much appreciated thank you.
Any advise or solutions is much appreciated thank you.
