I have a 2008 f250 with the 6.4 it had a leaking up pipe according to the ford dealership so instead of paying them i removed the cross over pipe for the egr coolers that are deleted and blocked it off at the up pipe and that seems to have fixed my issue but now after doing that im getting a real loud rattle from right in front of the driver seat in the engine bay and can feel a vibration in the throttle when i get on it was wondering what this could possibly be? Also may be worth mentioning the cross over pipe wasnt removed completely theres still 1 bolt holders a section of it on i havent been able to get a wrench on it as its wedged between the firewall and upipe on the driver side could the be what im hearing?