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mickster8888 mickster8888 is online now
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Join Date: Jun 2008
Posts: 445
boost guage install

i have an 1983 930 row and want to install a boost guage i purchased from north hollywood speedo. it is the one that replaces the clock. i bought their install kit to hook to brake booster and after doing so got no reading. the check valve works but i found that i'm only getting vacuum at the hose that connects to the brake booster. i don't know why this is. i had the small vdo boost guage in the car which is tap off the intercooler and is connected with a tiny plastic line. when i connect this line to the nhs boost guage it wasn't very sensitive and only registered when i was on full boost. do i need to run a bigger line to the nhs boost guage? the smaller guage was very responsive with the small line. the tap for this is next to the fitting on the intercooler for the factory electric boost gauge in the tach. any help would be greatly appreciated.
Old 01-20-2009, 07:15 PM
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