i have the standard vishnu turboback with the highflow cat in the mid pipe, i put in the helix resistor fix from gruppe-s to the o2 sensor but now that the hole for the o2 sensor is behind the cat and its way too far for the o2 sensor cable to connect back near the transmission...does anyone kno how to do this? i dun't wannt pull on it too much or anything I tried everything

 

You have to disconnect the O2 sensor from the harness. It's a grey plug near the transmission crossmember. The other end of that wiring is behind your intercooler. Essentially what you need to do is re-route the wiring to go down the passenger side of the transmission instead of the driver's side. Once you do that, it will reach with a few inches to spare. There are a couple of clips and ties that will need to be removed along the way.

I did it without removing the intercooler (since getting it back on is a PITA in the STi - the WRX is a bit easier). I just reached up since I knew where everything was up there. If you want to take your time and do it right, just remove the intercooler.

Note: the grey plug will be very tight if this is the first time you are pulling it off. You may need to use pliers on the release tab. Just be careful not to damage the plug.

 

thanx i'll give that a try