with a PPP car, what is different about the exhaust? I know it has a sports cat but what about the rest of the system, is it a second decat and straight through centre without a resonator?

 

Yes sports cat and a straight through section to replace the second cat - I also removed the long section between the PPP back box and where the second cat was and replaced it with a stainless straight through part which gives a lot better burrble.

 

the centre still has the resonater in, no other cats other than the sports one. not sure if the wrx ppp has a different system

 

so I take it the PPP centre section is the same as a normal sti one?

 

i'm pretty sure matey, as said above putting a de res centre in gives more burble