Which nipple on the throttle body (part 2)

[98spydert]

I didn't want to jack your thread Mark so....

What nipple on the 1G throttle body sees accurate boost and vacume. I'd like to run my boost gauge straight off one of the 3 nipples I have capped off so there's one less cap. Idealy I'd like to use every one so when a smog tech or CHP vehicle inspector looks at it, the caps don't throw up a not-smog-legal flag.

I have the boost gauge Td off of the BOV right now and it works fine, I'd just like to loose the T and go straight off of it's own source. THANKS!

 

[steve]

What nipple on the 1G throttle body sees accurate boost and vacuum.

I assume your talking about a 91+ 1G TB. The P port should see manifold pressure (both vacuum and boost). A quick check will confirm that.

Steve

 

[98spydert]

Yep, 91+ tb. Thanks steve, I'll give it a shot tomorrow when I start her up for the first time in a couple weeks

 

[kpt4321]

On 93-94 1g'sm the P port does not see vacuum if I recall correctly.

The best way to find out is to try them, it shouldn't take more then 2-3 minutes.