help fitting milltek
 

hi there gonna be fitting a 3inch full decat milltek exhaust(turbo back) which sensors need to be put back on and where are they.

its a new age 2004 wrx thanks

You'll only be swapping one sensor mate , it's the rear 02 in the mid pipe , next to gearbox ,you can't miss it ,, the other 2 are at the front , egt and another 02

bit confused there is no place on center exhaust for a sensor but on the down pipe there is a sensor all ready on it at the top where it fixes on to the turbo and another on the down pipe at the bottom which has a blanking nut screwed in.

Did you buy it new mate , put your mid pipe 02 anywhere in the down pipe and it will be ok , just pick the bung which matches your standard location best

No second hand ok thanks for the help

I'm not 100% but yours is later so your rear 02 might be in the down pipe anyway , soon as you see we're your standard one is it will become very clear , you might be lucky and someone's left the 02 already in so you can just plug it in and save you a little job

There is a sensor all ready in at the top of the down pipe

Your standard one may be in a similar place and they left one in
Take a look might be a bonus ,

Put the blanking plug where the top sensor is and fit your sensor at the bottom near the gearbox. You could leave it at the top, but it will mean extending the existing wiring