Quote:
Originally Posted by Jordo!
... Yeah, I figured the restriction would only kill power... our meters aren't hotwires? If they are, flow rmass is based on flow rate over the wire, which is very much affected by diameter, although the section before the MAF wouldn't have changed, so voltage readings should still reflect OEM scaling.
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When you have a restriction, the velocity goes up but the flow goes down. It's moving faster but has a smaller hole to go through.
As long as you don't change the duct size at the sensor (plus a diameter or two up- and down-stream) the sensor output should remain the same.