How restrictive is a up pipe cat on a wr1?
 

Hi,

How restrictive is a up pipe cat on a wr1?

Im thinking about decatting it, as i have done the downpipe already. Producing 335bhp at the min, will decatting the up pipe push a little bit more bhp?

Thanks

Pretty sure they don't have them, only the wrx's. :thumb:

As above they don't have an uppipe cat.

Sti's dont have a cat in a up pipe... your numbers are right on a vf35 .