hi i have a 2003 wrx brought it 2 months ago its now ready for a new mot but engine mangement light is on it has a straight through exhaust but no sensors on it can this be the problem and is there anyway round it thanks

 

needs a cel fix for the decat

 

what do they cost and how easy are they to fit mate

 

not sure tbh, mines was done as part of the map

 

even with the 0420 code removed for the decat you will need the sensors or the emissions will be out