Bringing this up again. The tamper-proof screws holding my MAF sensor in place have a five-lobe head with a substantial peg in the middle. They are not tamper-proof T20 screws. I'm not seeing this bit in the sets I can find at Home Depot or Harbor Freight but perhaps that is because I don't know what the bit is called. Anyone have an idea what I should be asking for. I have attached a photo. After 21 years and 45,000 miles it is probably not a bad idea to pull it out and give a spray of MAF cleaning fluid.
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