I have decided to get an Afterburner Vortex 2.5" non-resonated cat back system on my 2005 STi PPP. I believe my car has a Prodrive Sports Cat in the downpipe and the standard second cat.

Will the car need to be remapped in anyway for the Afterburner system? I don't intend to lose the cats.

Anything I should be aware of with this system?

cheers!

 

you wont have the 2nd cat on a PPP. you will, like you say, have the prodrive sports cat, and it will be fine.

i have the 3 inch version (with 2.5 flange to downpipe so fits original downpipe) - afterburner R, and i love it. i got a prodrive downpipe like yours fitted to my uk sti and with a remap made 330 bhp and simliar torque, imho a custom map suited to your car will be a better map than the ppp,so if you want the extra power get it remapped

lots of mappers to chose from, but my choice would be Richard Bulmer who mapped mine. he runs tractive solutions in melton mowbray


hope that helps

 

thanks for that...looking under the car it doesnt appear to have a plain pipe where i would expect the second cat...its a wide flat piece. i dont actually need to get it mapped though do i just for the centre section and backbox? cheers.

 

the prodrive second cat delete retains the original heat shielding from the cat so from a casual look is exactly the same as the cat, I don't know why they did this though. I can't see a problem with just changing the exhaust, although a remap should improve performance and economy over the ppp map.

 

cheers. that answers that then...so it's the heat shield i can see...how daft! i might look at a remap in the future but happy with the prodrive performance tbh. always be good to get a bit more mpg though! thanks

oh...have placed my order for the afterburner...should get it fitted on the 18th! cant wait.

 

the heatshield stumps alot of people lol