cals400ex

iTrader: (27)

I am new to the boost scene and I am trying to figure out where to hook up a guage. Can I hook it up to the fitting that I have labeled "boost" in this picture? I know that I have a hose going to it now but that will be removed.

TT350

Looks like GM thought is was a good place for the map so it should be fine.

XtremeDime

iTrader: (16)

Thats where most of us get boost gauge source from.

BadgeZ28

iTrader: (28)

What is the thing getting the vacuum off the smaller tube coming off the back of the manifold?

NightHawk

iTrader: (1)

Part of the Air injection assembly for the cats IIRC.

BadgeZ28

iTrader: (28)

Thanks.

cals400ex

iTrader: (27)

yes, in the "T" one hose comes from the AIR system and the other is for HVAC. I plan on eliminating the AIR hose and make a hose to measure boost there.

LS1RedZ

iTrader: (19)

Yes sir. Thats where I T'd mine off at.

C5kid

iTrader: (12)

That's where i have mine hooked into.

MadIceV8

iTrader: (12)

Yep its a good source. That is where I have my Boost gauge and Vacuum modulator hooked up for my 4l65e.