Not really a good time to fit anything "Non" business in to the mix. I'm still trying to get a couple of other ideas through the shop and have not had the machine time for a couple of months now. If I can get an opening I will get back to you. Sorry.

Is the chuck in your lathe too small for a 3" OD? Delrin cuts very well for a plastic and you should have no issues as long as your machine can hold it. Here is a link where you can find some material. McMaster-Carr .

I saw your setup and it looks like your MAF sensor sits a little high in the intake. Pull the filter off and see where the little square opening in MAF lines up in the tube. Someone please correct me if I'm wrong but it should be centered if not close to center of the tube to give a proper reading. I had to mill down the block the sensor mounted to in order to center it in my setup.

 

Yup, you also want to have ~6" of straight even diameter piping before and after the sensor. Turbulent flow will screw up the readings because of how the sensors are calibrated.

 

Thanks for the info. Regarding the 6" comment, are you sure about that? There are tons of people doing this setup where the whole intake assembly isn't even long enough for that, i'm not too sure that necessary.

 

its a rough rule of thumb I use in UICPs, but you're right in our case 2-3" should do, the main idea is to keep a smooth transition and maintain diameter.

I.E. If using a 3" sensor, use 3" charge piping.