Luigi60 10 Posted November 5, 2012 Got a couple of issue's with my MFA readings; Firstly that the mpg is always reading 99mpg, which iv seen is a rather common fault but have not yet found a solution. Secondly, the diagnostic test (for reading boost levels etc) does not seem to work? I have followed the 7 steps which should lead to the pressure being displayed on the computer but it just switches to the second function of the mfa2 as it normally would.... Any ideas? Quote Share this post Link to post Share on other sites