TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

Vacuum pipe

Thread Tools
 
Search this Thread
 
Old 06-09-2017, 11:38 AM
  #1  
Junior Member

Thread Starter
 
thebandit92's Avatar
 
Join Date: Oct 2006
Location: Wigan, England
Posts: 65
Likes: 0
Received 0 Likes on 0 Posts
Car: 91 Trans Am 5.0
Engine: 305
Transmission: 700R4
Vacuum pipe

Can someone tell me what this black pipe connects to.Just changed injectors and i remember seeing it under the plenum but can't see anything to connect it to.It comes from what looks like a ported switch at rear of engine,passenger side.
Car runs fine with it not connected.I remember the end of it being near throttle body.

Name:  IMG_2321_zpsusutve1n.jpg
Views: 60
Size:  186.4 KB
Old 06-09-2017, 11:47 AM
  #2  
Supreme Member

iTrader: (2)
 
Bob88GTA's Avatar
 
Join Date: Apr 2000
Location: Huntsville AL
Posts: 3,938
Received 98 Likes on 62 Posts
Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Re: Vacuum pipe

It goes to port under front of plenum




Edit: Port, not IAT

Last edited by Bob88GTA; 06-09-2017 at 12:20 PM.
Old 06-09-2017, 01:29 PM
  #3  
Junior Member

Thread Starter
 
thebandit92's Avatar
 
Join Date: Oct 2006
Location: Wigan, England
Posts: 65
Likes: 0
Received 0 Likes on 0 Posts
Car: 91 Trans Am 5.0
Engine: 305
Transmission: 700R4
Re: Vacuum pipe





All times are GMT -5. The time now is 01:58 PM.