I picked up a used pyrometer and pressure gauge last week that I am trying to get working. I picked up a thermocouple kit from autometer and the pyrometer is working great, but I am having porblems getting the pressure gauge installed. Where is the best place to tie it in to the intake at? I thought the 1/2" npt plug behind the IAT would work, but I just found out that the plug is to the cooling jacket.

 

You'll need to drill and tap the air intake stack above the grid heater. Remove before you drill and tap to avoid metal chips in the intake.