vti4mark Posted December 25, 2009 Share Posted December 25, 2009 as title car running rich it seems, using even more petrol and smells rich out the back.going to take the spark plugs out later today and take alook but can anyone think off something it could be.thanks markps the only mods on the car is full system with decat and k&n panel with res box taken out. Link to comment Share on other sites More sharing options...
jalesi2001 Posted December 25, 2009 Share Posted December 25, 2009 It could be your oxy sensor, do you have an engine management light on? Also with the decat on it, the car will produce more "smoke" out of the back, and also in the cold weather your car will use more fuel... If everything is working ok, the car shouldn't run rich really, as the emmissions are ECU controlled... Link to comment Share on other sites More sharing options...
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