I unplugged my MAS once and drove around the block, out of sheer curiosity. I honestly felt no difference, nor did my engine run any different. The only difference was I got that 'CAI' vacuum sound. It's a bad thing to do because if something flys into your intake, like water or a pebble or a lot of dust or something, well, let's just put it this way. When you call the furneral home and ask for a service for a 4g64, don't be upset when they hang up on you.
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