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View Full Version : 7Gs with boost gauge



peanotation
04-02-2009, 02:23 PM
What's your vacuum at idle? And whats your idle RPM?

On my old motor, from the day i put the boost gauge on to the day it died, motor was always at -20vacuum at idle, ~900rpms. Now with the new motor, its -25, ~850rpms. Just wondering how varied everyone else's readings are

DOHCstunr
04-02-2009, 04:31 PM
My 2.0l w/ stock cams, and 7.8:1 compression pulls 22inch/Hg

DOHCstunr
04-02-2009, 04:32 PM
A clogged PCV valve will increase your engine's vacuum reading.

Galanttuner10
04-03-2009, 06:39 PM
mine is -25 at 850 rpms

hk20000
04-04-2009, 03:50 AM
-15 at 670RPM....this is a 6A12TT though.

Blue Ice
04-04-2009, 09:13 AM
~20 at idle on a 4g63, but my rpm gauge is not working

4-G-rim
04-04-2009, 10:16 AM
-20 at idle @ 850rpms on a 140k stock 4G64

phizzalot
04-04-2009, 12:17 PM
about ~21 at idle rpm 850

Galanttuner10
04-04-2009, 09:32 PM
ok so after a 900 mile drive home and a tune up its now -18 or -20 at 800 rpm