[03-GMC]

Here you go man this thread should help you out

http://www.duramaxforum.com/forum/gauges-electronics/33506-gauges-install-today.html

 

[03-GMC]

ok. even the boost sensor well running too? or just the manifold. i don't want to take that off. the pipe should'nt bo to bad to take off though.

I would take the intake bridge off to drill and tap it. I wouldnt want shavings going directly into my motor. Or you could always buy a SD manifold they come pre tapped but they are around $100