when i fitted my boost guage it worked fine for a week or so then it started to only read negative pressure.
ive got the pipe t'd into the dump valve breather on the top of my oo7p its not a blocked pipe as ive changed the pipe for stronger pipe and its still doing the same? the boost wont read over 0 psi. ive also tryed a new guage and t peice any ideas would be great
thanks in advance gary