My friend has an x police td5 which is coming into my garage this week for me to replace the rear airbags with springs as it keeps dropping and he's sick of it but iam wondering if as it was a police one do yous think it will have been chipped? How can I tell? and are the ecu's interchangeable? Just once I've fixed it, serviced it and had it valeted he's selling it so was thinking if it's chipped could I swap the ecu into mine? Theyre both 2000 models. Cheers.