Hi all,
if the maf needs to be taken out for whatever reason to take the whole housing out. According to that guy the maf's are calibrated in the factory and if you take it out by undoing the two screws only (leaving the housing in place) he said you can easily/mostly loose 10, 20 if not 30 percent of the performance of the maf. He said he got a big client (Colruyt, big department store with lots of vehicles) who regularly brought in maf's for replacement under warranty. Bosch had a closer look and they noticed they took out the maf's of the housing and now they only will grant warranty if the maf remained untouched in the housing. That's also the reason why you can't get the maf's apart but always pre-mounted in the housing as one set. What do you all think about ??