Boost piping

[Niall]

Just after a little bit of help here. Piping up my charger. Ive got 2" outlets on my intercooler and the easiest way for me to pipe it would be 2" from the charger to the IC then 2.25 out of the IC and onto the throttle body. Would this be ok or should i get two 2" to 2.25" reducers and run all the pipes in 2.25" except for where it enters and leaves the IC?

Cheers