iv got my engine check light on the car drives fine starts fine no problems its got a 100cell race cat stainless exhaust turbo back just wondering if it could be the emissions?

 

I had a full decat so obviously the CEL was on, then fitted a race cat and reset the CEL and it stayed off for months untill I did a long run on the motorway and it came on. Had it checked and it was the cat so the run on the motorway must have just tipped it over the threshold and triggered the CEL so I would say it's almost certain to be the cat but i'd get it checked to be sure.

 

ok will do cheers mate .
when i get it mapped will the engine light stop coming on for the emission problem.

 

Your map will sort it.