#170, "RE: EGT thermocouple install" In response to In response to 0
You can probably do either. The first time I installed my EGT probe, I paid somebody $15 to weld the bung in. When I got the turbo manifold, I paid someone to tap the manifold for the probe . The probe probably needs an 1/8" NPT tap. They are pretty cheap. You could do it yourself for cheap.