1G Source on intake manifold for GM MAP sensor

[illeagle92]

Hi there.

Having trouble finding a vacuum source for my GM map sensor. I know it's best to keep it higher on the manifold and as close to it as possible - but what do I use as a vac. source?

I've seen a few folks say to just mount it to the firewall and run a hose from the manifold to the sensor... but where on the manifold? Can I use one of the nipples on top by the tb?

Basically do I have to go get the manifold tapped and a fitting welded in or am I completely missing another way of doing this?

Thanks in advance. Sorry for the ignorance. I've been looking around but I want to be sure before I go pick up another manifold and pay for the welding/work.

 

[hotrodssnova]

I run mine off the same nipple the fpr is hooked to.

 

[1990dsmkid]

Theres a spot on back on intake manifold that you can drill and tap to install the map sensor. Theres a thread somewhere on here about it. Do a search. Should be able to find it

 

[90gsxjuice]

You can use the nipples on the tb as well.

 

[serviceguy]

http://www.dsmtuners.com/threads/wiring-logging-an-aem-3-5-bar-map-sensor.369338/

It shows pretty much all of the available locations for different types of IM, including 1G and Evo III.