Had mp-8 and gauges installed on Wednesday, took off on a trip pulling 37' camper, and after about 80 miles the engine light came on. Seemed to run fine, but the eg's were running 1300 to 1500 which seems pretty high. I was only running it about half the way. I unplugged it and returned to stock and the eg's run about 1200 to 1300. What is normal for the 6.7? After another 300 miles and a few stops, the engine light went out. I know I need to get the code checked, any ideas? I am 500 miles from home and should be fine going home at stock.