manx

<center><img src="http://home.comcast.net/~carafrank/RS2vsAAN_MAF.jpg"></center><p>I don't show it but the RS2 is less restrictive approx 2in h20 vs. 2.9 for the stock maf, I haven't checked the stock one without the screens, but suspect that you would need to remove both to get it the the RS2's backpressure. Other then that they are basically the same, just a few hp lost trying to get the same flow out of the S4 unit, at least up to 180cfm. Anyone got numbers off up to 600cfm, from a larger flow bench. I am currently doing data aquisition on MAF voltage vs. RPM on my car to get a better idea of the map for the RS2.

UrS4boy

decrease in headloss/increase in flow when the screens are removed from the OEM MAF.

Dave F.<ul><li><a href="http://www.autospeed.com/cms/article.html?&amp;A=0652">http://www.autospeed.com/cms/article.html?&amp;A=0652</a</li></ul>