Hi, can anyone tell me what size OD the MAF sensor is on each end, where the rubber duct slides over? I am going to be collecting parts to make a custom CAI, but the car is out of state at the moment and I can't measure the sensor. I am probably going to get 3" galvanized steel electrical conduit or exhaust pipe and mig up an intake, then paint it, and I need to know if the MAF is also 3" or if I have to use reducers to mate to the 3" tubing.

 

3" OD, give or take. I think its just a little over, but 3" connectors will work. Do a search for the CAI thread i created about 6 months ago if you want a link to some trick polished aluminum piping.