if your 04-05 mz3 built before July 05 and is getting "CEL" with P0172 or P2178 or P2188 codes, the ground wire at the MAF connector needs to be replaced due to a poor connection... it should be done in accordance to TSB 01-006/06... a special repair kit is available as part of that TSB... it is covered under warranty (obviously) and will take no more than 45 minutes to repair
it shouldn't be all that surprising to all that this s*** is happening to those who have aftermarket intakes because practically all of the new mazdas are using an updated version of the same bad MAF used in the 1.6l protege, and people had TONS of issues with their MAFs on their 1.6l proteges... the issue on the protege intakes is that the MAF isn't getting sealed properly around where it goes in, so people tried using bicycle inner tubes as a seal and had mixed success
