My first post! Very new to all the diesel power, and frankly i have fallin in love!! I found my new duck truck. LOL. My question is how modified does a truck have to be before you go to the extent of adding gauges and sensors to monitor your engine? I plan on puting a K&N airflow kit. a 4" exhaust and maybe a tony wildman system! Thats probably it until i get to know these trucks a little better!! Thanks for any help and input!!