I'm installing an Autometer boost guage and I was wondering if anyone could tell me if it would hurt anything to leave the stock boost guage inoperative or do I have to run both guages so that my computer doesn't have a cow? Thanks in advance for the help.

 

Just pick up a rubber 7/64 tee from Autozone to splice into the black plastic line above the go fast pedal and both will still operate. Here are some directions to assist you:
https://www.f150online.com/forums/sh...all+Directions