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Posted by gavski (90 SE / 02 WRX) on September 23, 2002 at 13:55:50:
In Reply to: Hey turbo guys, question about boost gauge install.... posted by DA-MAX on September 23, 2002 at 12:22:41:
I also used a factory rubber grommet in the firewall for the line. Taped the hose to a length of hanger, shoved it through a nail hole in the grommet and grabbed the end when passed throught the firewall. Note, some folks have melted plastic vacuum line by mounting too close to hot turbo parts. A few guys just purchased SS covered vacuum line from the local auto parts store. Its relatively cheap and may solve all your problems.
Wouldnt worry about the length of the hose giving good readings. I just installed a boost gauge in a WRX. The install kit provided about 10' of 1/8" hose and while I could have trimmed it by about 4', I just left it on while I test fit everything. It worked so well I just left it on -- fast response and steady on the readings. So you could just buy more vacuum hose.
No worry about leaks onto under-the-dashboard electronics.