You're going to want to change the 4-5 shift values lower depending on what throttle position your having the issue at. I set mine based on what rpms I want the motor at in the next gear, in this case that would be 5th gear. Depending on throttle position I have mine shift to 1250-1750 for normal driving.
this is the only pic I have at the moment. As you can see I have the shift point rise with throttle position. Also the "mph" values for the shift points are off by a certain factor for some reason, so dont worry about the actaul value, its more about how they compare to the other values. For example in my truck, when I set the shift point at 50 in the tune it really happens at 60ish, and when I set the shift point to 25 in the tune, the truck will actually will shift at 30ish. You probably won't want to use my exact values as I have altered my throttle mapping and some other things.
Well on my truck the factor the tune values is off by is about 0.71 so I'd guess somewhere around that. I have 3.55 gears and 35s so a higher axle ratio and smaller tires would make that factor closer to 1. By 0.71 I mean the numbers I put into MCC are 71% of the actual mph. So for your truck I would guess about 37 or so assuming you have 3.73 gears and stock tires.Awesome. Thank you. Any idea on where i should have it so it'll shift around 47 mph? This is where i have it set right now. I did knock the places down a bit.
Edit: Photo you can actually see. Lol
