[Guest]

Just wondering what everyones vacuume at idle is and can this tell you if you have a boost leak?

Chris

 

[Guest]

mine idles at 20....dont know the unit, but 20 (something) below 0psi. I was told if you idle below 20 (ex.18 or 10, closer to 0psi)
you have vacuum leak.

 

[Eric95TT]

yup, also at 20. I believe the units are mm Hg, (the same units use to measure barometric pressure). I noticed that during a gear change the needle dips below, to about 23mm Hg

 

[Guest]

yeh it dips..I notice it also when cruizing on highway that it goes to 23-25, only at idle the gauge shows 20.

 

[Taimur]

yeh it dips..I notice it also when cruizing on highway that it goes to 23-25, only at idle the gauge shows 20.

Same here.

 

[Guest]

uhh... this is bad....!!

My blitz turbo timer w/built in boost gauge shows I have -.60(ish) vacuume at idle

WHAT DOES THIS MEAN....?????

major leak????

 

[Guest]

the -.60 is in BAR .. around -8.6 psi

 

[Guest]

...

 

[greensoup]

The blitz unit has different units than the ones people are talking about.

Mine shows -50 or -.5 or something like that.

 

[Guest]

what "other" numbers... there are metric standards.. either PSI (pounds per square inch) or BAR (barometric pressure which is messured in millimiters of murcury) ... so I don tknow what your tlaking about??

 

[Guest]

My avc-r reads about -460 to -500 mmHg at idle. Is this too low? Someone else who is bpu with an avc-r have simialr readings?

Chris

 

[SagaSupra]

when i had the Apexi AVC-R it read -.460 thru -.500 in idle.
with the Blitz SBC i-D it reads -.48 thru -.51 in idle.

 

[greensoup]

what "other" numbers... there are metric standards.. either PSI (pounds per square inch) or BAR (barometric pressure which is messured in millimiters of murcury) ... so I don tknow what your tlaking about??

Boost is measured in PSI/Bar (blitz meter doesn't use either for boost its like kg/cm) etc.

Vacuum is measure in some different standard (something) like
mm/Hg or cm/Hg or inch/Hg.

What the boost drops to vacuum the units on the blitz turbo timer should switch to different units. If its not seeing a vacuum or the units are not changing you might have a problem.

 

[Guest]

My vacuum reads 16 at idle but the darn thing runs quick as hell. Is that too low or should it be higher? I'm only running 1.1 bar now but I guess when the fuel upgrade goes in and the boost goes up, I'll find if there's a boost leak.

Eric

T-78

 

[Guest]

What is the best and most safest way to check for boost leaks