Hi. Chris.
I have this problem for years despite having a bespoke cat made, changing sensors, engine was rebuilt so no carbon issues. Sometime it happens and is very common. I know this is a bit far but as an alternative of not getting an MOT give Chris at Lightening Motorsport a ring.I have used him for some time now. He is a very knowledgeable regarding Puma's. He may be able to help.
Regards Richard.
I have this problem for years despite having a bespoke cat made, changing sensors, engine was rebuilt so no carbon issues. Sometime it happens and is very common. I know this is a bit far but as an alternative of not getting an MOT give Chris at Lightening Motorsport a ring.I have used him for some time now. He is a very knowledgeable regarding Puma's. He may be able to help.
Regards Richard.