O2 Sensor Extension Only

So far it's been 230 miles and no check engine light,I used the biggest hole that comes with it,I have a 2020 wrx DIT. After getting dyno Tuned I got a check engine light because I have a downpipe with a hight flow cat. My E tune never got a light but the dyno tune did.. I bought this first to see if it works before I go spend 1200 on a ETS gesi downpipe.. so far it's good