The kit that I have has been on the truck for about a week I am repositioning the innercooler because the innercooler is facing the ground don't know how that works, so I am siiting it up bihind the bumper and so I have to rework the pipes so my stock pipe coming form the turbo is 2" I believe that is too small so I am think of remaking it with 2.5" piping which is better?