Subaru Forester Owners Forum banner
1 - 1 of 1 Posts

2013 BRZ 6speed RWD
53 Posts
Discussion Starter · #1 ·
Well while I was installing my UEL borla headers on my SF5, I noticed that there is a Wideband bosche style plug on the first O2 sensor... I asked a friend of mine who tears down a lot of N/A subarus (this is the first N/a ive really tried to play with) and he said that it is really important and that you have to leave that cat there or it runs like crap.

I was going to run a catless system as we dont have emissions where im from but now im thinking twice. Can anyone clear this up for me?
1 - 1 of 1 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.