please could somone tell me,will after market exhausts fit onto a ppp exhaust system?
will a bac box go stright on?

 

i replaced my prodrive bb with a blitz. much better

 

Yes, the PPP system is compatable with the aftermarket offerings, in fact, the section that the back box bolts on to is the original STi resonator section which isn't changed.
JohnD

 

For "much better" read "just noisier"

 

thanks for the info guys,i,m off to get me self a new exhaust from the cat back.can anyone recommend a system?

 

The xforce system from australia is awesome. I saw and heard it on a mates car! check their website out. www.milsport.co.uk
dave

 

If you've got a PPP system on it already, you already have a perfectly good set-up. From the cat back, you mean the downpipe - this is the only section on the STi PPP system to have a (high flow) cat in it. I assume you just want more noise? If so, there's a big choice out there!
JohnD

 

so are u saying theres a cat in the downpipe?if so,then i could remove the cat which is just b4 the resonator?

 

If you have an STI with PPP, the exhaust will consist of:
Sports catted downpipe
Decat small centre section
Standard resonated centre section
Prodrive back box.
If you want more noise replace the back box and resonated section.

 

thanks for that,when i have had a look under the car,the centre section with the resonator in it,it looks like it fits to what looks like a cat?
would i be right in thinkin that?

 

starting from the turbo you have cat down pipe,then a smaller cat pipe, then the centre section and finally the back box. if you go onto scoobyworld you can view a very god diagram of the exhaust system. I have a prodrive sports cat, a second cat decat pipe, the standard centre section and a prodrive back box. I get a throaty rumble which imo sounds better than the really loud blitz etc.

 

If its the PPP pack Subaru replace the heat shield over the new decatted centre pipe. So no cat.

 

thanks to all who has offered advice
so really i just need a system from the cat back as it has a sports cat on it!
cheers david.