There are numerous advantages to going with an HPX setup, and if you're using this on a car before the 2005 Mustang, you'll need this aluminum flange to install the HPX MAF Sensor onto any size tube you'd like... with a little bit of welding.
HPX MAF Sensor is not included.
Helpful advice: The slotted style MAF is directional, and so is the flange. If somebody is welding this onto a pipe, make sure you test fit the flange on the tube, and have the direction flow going in the proper direction, the flange looks like it is universal, and it's no fun to find out otherwise.
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