vinny1

Hi all just a few questions and to see if there is anyone else having this problem, now I have a 2002 focus st170 I have put the bluefin on when it was standard which is fab, but now I thought I would go for a cone filter which I have, it is a focus st170 cone filter with all the right pipe so it can fit the air sensor in, but since I have done this it keeps cutting out on tick over not all the time but when I have been driving hard. now the engine management light is on. I done the diagnostic test wid the bluefin and it comes up wid a fault code p1132 which is a h02 sensor it says its to lean?
I tuck the chip off which never changed a thing, alls I can think of is the filter is confusing this sensor, which is cutting of the engine to save doing damage... does anyone no what I can do to sort this annoying problem out,,,
many thanks