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I tapped the vacuum line to the fuel pressure regulator Posted by REM in Seattle [Email] (#4) [Profile/Gallery] (more from REM in Seattle) on Fri, 1 Jun 2007 13:24:55 In Reply to: Best place to tap into vac hose for boost gauge?, kents900se, Thu, 31 May 2007 13:05:42 Members do not see ads below this line. - Help Keep This Site Online - Signup |
For the vacuum/boost line, I used the 1/8" nylon tubing kit for my VDO boost gage. I connected to the fuel pressure regulator line vacuuum using a 5/32 nylon tee. I used a piece of 3.5 mm silicone tubing to connect to the tee fitting and then used a small amount of silicone RTV on the outside of the 1/8" nylon tubing, pushed the 1/8" nylon tubing into the 3.5mm silicone hose and secured with two cable ties.
I also covered my 1/8" nylon tubing with 4mm silicone hose for maybe 3 feet. The 1/8" nylon tubing slides fairly easily into the 4mm tubing. I am hoping that the 4mm silcone tubing will help prevent kinks and abrasion of the 1/8" nylon tubing as it passes through the firewall. I ran the tubing through the rubber grommet in the firewall that the clutch would normally use (my car is an automatic).
For power, I tapped the 12 volt lighting for the headlight switch. It was easy to remove the headlight switch to get at the wiring.
I then routed the 12 volt wiring and the 1/8" nylon tubing up through the driver's side front radio speaker hole so I could mount the boost gage in a pod on the driver's A-pillar.
REM in Seattle
2005 Saab 9-3 Aero Convertible; Steel Gray metallic; 5-speed; 14,000 miles
1998 Saab 900SET; Silver metallic; 5-door; Automatic; 91,000 miles
1984 Saab 900T; Cherry Red; 3-door; 5-speed; 242,000 miles (RIP)
_______________________________________ REM in Seattle Current: 2013 Volvo XC60 R-Design, Rebel Blue, 3.0L 6-cyl turbo, Automatic 2024 MINI Cooper S Convertible, 2.0L 4-cyl turbo, 6-speed manual Former: 2005 Saab 9-3 Aero Convertible, Steel Gray metallic, 2.0L 4-cyl turbo, 5-speed 1998 Saab 900SET 5-door, Silver, 2.0L 4-cyl turbo, Automatic 1991 Alfa Romeo Spider convertible, Alfa Red, 2.0L 4-cyl, 5-speed 1984 Saab 900T 3-door, Red, 2.0L 4-cyl turbo, 5-speed
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