Regarding the AUTOENGINUITY have a word with Gendan who sell the system, I,ve had the autoenginuity connected to my car by Zeb and it is good, gives much more info than Enginecheck Pro which i find good and i have used on other cars to diagnose faults, but glad to say have not had a fault with the 260 to test it, but the latter is half the cost of Autoenginuity.