I'm very pleased to hear you had a good experience at Airey tuning.
I didn't.
I took my Fulvia there after an engine rebuild in the summer, it was running well but after the run in period I wanted the programmable 123 distributor fine tuning.
He informed me it wouldn't be a problem.
I collected it and he hadn't touched the 123 as he said he didn't have the facilities to do so, no printed curve, the car was only running on 2 cylinders and he wouldn't give me the keys until I had paid in full in cash.
Horrible experience.