want to verify mech boost gauge readings...

David Head v8q at bellsouth.net
Wed Jun 13 18:18:33 EDT 2001

Horse patootie. Your numbers are perfect.

jim rose wrote:

> hey all!
> finally got a vdo boost gauge hitched up. i wanted to bounce what it's
> telling me off the list to see if i hooked it up right. i tee'd it into the
> vac line that goes from the back of the manifold to behind the pass side
> fender. i used the decel valve line @ the metal tee NEXT TO the send line
> for the ecu (mechanic told me to not use the ecu line as he claimed it could
> screw up the ecu signal).
> the gauge reads 12-14 in. vaccum @ idle and max boost (that it makes right
> now) is 1.2 bar on the dash = 5/6 psi on the vdo. at decel from full boost
> it'll drop to -20ish "vac. is that right / in the ballpark?
> i feel like it's rreading right. it makes sense that the engine is sucking
> at idle. i ask bc my mechanic said it should read "0" at idle and boost/vac
> from there.
> is he nuts? or am i?
> Thanx!
> jim "gauges dont lie" rose
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