right guys, im having my cel light comming on on my impreza 2003 blob eye wrx type uk, i have added a full stainless system from turbo back, so there is no cats, the problem is coming from the gas flowing to fast past the 02 sensor thus confusing the old ecu and putting the cel light on.

the code is a catalyst threshold engine code.

apparently u can get a 'Mil eliminator' which will fix the problem and stop the light coming on, but im not sure wat the mil eliminator is or how it works or how to fit it? does any one have any ideas,
i know the proper route is to either put the cats back on, or get the car mapped, but i dont want to fork out £500.00 on a map just for an exhaust system!?

any help guys would be greatful!!!!
thanks guys
cj

 

you need to get a re-map as you have fitted the exhaust which will muc up your fueling and if to rich you could pop your engine

 

Not really true tbh. Decatting the exhaust can lead to overboost conditions, which may or may not cause you problems.