I removed the screen in my MAF. Thinking it would give me a couple of extra hp. I ran it like that for a week or two. It seemed to cut of the top end a good bet. Then i seen somewhere that it leaned the car out. So i put it back in and the power is back, but it seems it just moved my powerband up about 1000 rpm. Has anyone else tried this? If so did the samething happen to you?