Yes dojj its a Gunson's fault finder that does plug into the 3 pin diagnostic plug by the battery and ive got a book / instructions with it and the codes relating to the number of flashes etc and it does cover all things like the air flow meters etc and the flash code for afm is like 22 but its only giving me for code 11 and that means no fault - system pass . However if i slightly discont the afm or fully disconnect 1 cable it does throw the fault up saying afm so this to me shows the code reader is working fine and that the afm must be ok ? Also the links you did put up with fella on ebay i did message him and he wont sell the air flow meters and said he wants to sell them complete with the engine