Replaced my o2 sensor - P1115

[CJ_Boxster]

I replaced the o2 Sensor yesterday and all alot of the missing HP came back and im already noticing that my mileage is increasing, I drove the car atleast 20 miles and spirited too and the fuel gauge needle moved about a millimeter. Literally, the needle was touching the higher edge of the 1/4 mark on the gauge after the install of the new O2 sensor and after the spirited driving i did afterwards and the drive to work this morning... It now touching the lower edge of the 1/4 mark.

BTW, i have 104k miles on my boxster and when i replaced the 1 bad o2 sensor, i did not get the cel for the other 3 o2 sensors like some forum members experienced.

I also notice that my idle is SO MUCH BETTER, i dont get that little stumble during idle where the rpms will drop from 900 to nearly 400 then back up. Its solid now!