Go on then who knows ?

My undersanding :

P1 is essentially a type R import tinkered with by Prodrive for the UK market and as such basically has a standard Sti exhaust on it.

The PPP centre section is a UK component produced by Prodrive

So the questions are :

Both the PPP and the P1 centre sections are resonated but are they basically the same ?

Will I get the same performance improvement from the P1 centre section as the PPP centre section (in conjunction with a PPP back box) ?