I cleaned it and its a different model so can't change. 98 is diff maf. When I rev the airflow goes up and fluctuated with the engine speed in live data. I don't think it's bad.

 

If you post the reported MAFS airflow and RPM someone will know the real figures.
If not I can calculate the theoretical flows.

Further thoughts on high -ve FTs they can also be caused by high fuel pressure or a leaking fuel pressure regulator diaphragm - in other words too much fuel delivered per injector pulse.
Can you read fuel rail pressure with your OBD reader?

ps
Please put your car details in your sig
User CP (top left)>edit signature
so we don't have to keep looking for your engine details.

 

I've not read the thread completely so am unsure if this is still useful but;https://www.jaguarforums.com/forum/p...le-body-88656/
Don't ask me to help diagnose, that's how I ended up with this one