does it have a cat in the middle section, or is the big bulge a resinator box or something? ive ahd the down pipe cat removed and i dont want anything else getting in the way.

 

the cat removal pipe on a ppp still retains the heat shields so looks the same from a casual glance as the standard pipe, if you are on about the bulge in the long centre section this is a resonator box and this can be replaced with a non resonated centre section, it adds a bit of noise but unsure if it actually makes any performance difference. The biggest restriction if it is a wrx ppp is the cat in the up pipe and this can be replaced with either an sti up pipe or an aftermarket stainless pipe, although allow a fair amount of time if you are fitting this yourself, took me about 4 hours to do up pipe and down pipe due to awkwardness of undoing the bolts and nuts.

 

Ok, ive had the down pipe replaced and that was covered in heat shields and has got a cat in it, is there another cat in the up pipe then ?

 

yes

 

Yes so you need these which are what I have on my ex-PPP'd MY03 WRX :-

H&S Up pipe




H&S Centre pipe straight through



If you have the PPP you should already have this short section & backbox

 

be it will be loud as **** with those 2 pipes fitted

 

anyone got a link to prices?

 

Oh yes. Even louder when you ditch the Prodrive backbox like I have & stick one of these on the back :-






Link to prices

 

I have decat up pipe ppp sportcat downpipe and centre decat, H&S de res centre section but retained the ppp backbox and it is not to loud at all.

 

That's why in the end I took my PPP backbox off. I got used to it & it started to sound too quiet for me.

 

i had a hayward n scott down pipe, custom made straight through center sec and a blitz nur spec back box and i hardly ever heard anything louder. LOVED IT, oh and i made a flamer kit and it worked a treat, and it was 1 which didnt use the coil cut out, got some fooking HUGE flames.