Howdy
I tapped into the air horn on top of the manifold. This is the top of the manifold that connects to the turbo.
This can be done pretty easy. loosen the silicon coupling to the turbo, 6 bolts to remove the horn, pick a spot along the edge that has thick material, drill and tap a 1/8 pipe thread. Make sure you don't get metal in the manifold. On most air horns there is a small flat area on the back passenger edge(?) that is a great spot for this, but any place on the air horn or manifold will work.
Good luck!
1996 Chvy 3500 CCDWLB 6.5 Heathed, NO vac, marine injctrs, ARB bumper, BIG pipe, 3" lift, bright lights, bypass oil system.
1986 Chvy 6.2 M1009 blazer RAM AIR, Headers, Custom interior
2001 Chinook RV, V10 gas
1974 John Deere 1530 diesel tractor
1993 John Deere 455 Diesel lawn mower
1967 GTO, 1989 Honda Transalp
2009 VW Jetta TDI, flashed and piped, 6speed, fun car!
1998 6.5 suburban, stock, daughter's
1993 6.5 3500 CCSWLB GM8, Heathed, big exhaust, gauges, Son's
1984 6.2 ATS turbo 3500, SCDWLB - Son's
3 kids, 1 wife, 1 dog
Gunsmith, Tactics Instructor, Fabricator USMC 87-93 Semper Fi!