Sorry I just want to check something to make sure I get this right, I can't undo the bottom hex bolts on the egr so am just gonna blank it out completely am I right in thinking that's on the sheath covered pipe at the bottom of pic 1 (front centre of engine) and both sides of the flexible pipe in pic 2 (then removing said pipe) and what effect will this have on my mpg as have read that it will both improve and decrease it on this site and it can't be both lol thanks for your help