I have recently fitted my miltex decat to the megane , I have has it on for around a week now with no issue , but last night after a hard drive the engine light and spanner come on saying check emissions :/ I was expecting this , now is there a fix for this or would I have to get it mapped out ? Cheers
£82 quid mate, quite expensive. They told me they have to use that to get the light off , whether they were just trying to upsell it or what ever not 100%.
I think you just need to space the sensor away from the exhaust flow. The ktec mini cat just looks like a tubular spacer with some mesh in.
I bought a lambda extension for the second sensor off ebay for a fiver.. rhe light came on once or twice but hasn't come on in over 3 years since.. probably all sooted up now I'd say the minicat is a bit ott..