Originally Posted by bygddy
That would be something I would love to try for the set I just finished.....Google here I come.....
i built one long ago , so my memory is a lil fuzy but the basics are
u build a box u can bolt the head down to one chamber at a time and seal the box up good with some calulking on the inside , i used a 3inch speaker box port on my box to make it eaier to clamp the maf sensor onto .
but u can drill a 3 inch hole in the box and use a piece of 3 inch ex tubing as well and just glue/seal it to the box .
from there u clamp ur maf sensor onto that then u clamp the vac hose onto the other end of the maf .
be sure the maf sensor is oriented so that it reads flow from the box to the shop vac
i forget exactly which maf sensor to use but u have to supply 12 volts on one pin and 5 volts on another , one pin is ground and then u take ur reading with the dvom on the reminaing pin witht he dvom's positive lead, the dvoms ground lead just goes to were ever u have the maf grounded to more then likley ur 12 volt power supply
if this is something u will use a lot build the box out of steel instead as it will last alot longer from the continuous bolting down and unbolting of the cyl heads