Im looking to get a STI v8 type UK. Would like to get one with a PPP, but if its the right car without it I might have to get it and get an add on.

So I'm curious to know how the aftermarket options compare??
Value for money, Power and Thirst?

 

Estimated power output and acceleration times listed in this thread

 

As your warranty has expired (i would have thought), you will get much better results and a lower cost going for the aftermarket mapping route than an off the shelf PPP.