The EPB controls quite a bit as far as i understand. Your turbo reads the EBP sensor can determains the amount of boost and fuel to apply. Mine was bad on my 04 and it made my truck run like it had a race tune on it. I was getting 30 psi boost and and blowing black smoke when i got on it. I realized it was bad when i got CEL code. Replaced it now i am lucky to get 22psi and truck is much slower...i put in a used one though getting a new one soon...if it is loose just tighten it up
Last edited by 04Powerstroke_John; 02-08-2011 at 08:08 PM.