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Boost pressure - not more then 0.7 bar on a V70 T5 ? V70-XC70 1998

posted by  davidm on  Sat Jan 19 02:04 CST 2002
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Check the connection at the back of your gauge. I had to re-do this connection three times before I got the connection leak free. I used teflon tape on the threads and around the outside of the compression bushing....and a little plumber's putty smeared around the outside of the connection at the back of the gauge. You have to tighten the connection pretty securely - but not so tight as to crush the tube.

also, make sure your connection on the vacuum tree is secure. Tiny vacuum leaks can make your gauge read differently than you should.

finally, at low speeds, your ECU limits boost. Up to around 30mph, my car sustains 4-5lbs of pressure, then is realeased to around 9-11lbs sustained pressure. I see momentary spikes about 5lbs higher on certain occasions.
--
(98 S70 T5SE misc mods, mostly lighting) (92 940GLE)






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