Vacuum at idle
 

As the title says, I wired up my boost gauge today and connected all the hoses. I'm using one of the nipples the secondary air injection used to attach to (very back of the intake manifold, should be a good reference point.) Started the car on the stock ecu, and vacuum is around -13ish. The gauge does move when I rev, so I'm assuming all is well. I just seem to remember my old GST sitting around -18 or -20 on my boost gauge. I'm guessing the F20 just builds more pressure at idle than the 4G63 :p

Yea mine was just a hair under -11psi. Mine may have a very slight vacuum leak

Sounds good, thanks man!

:tipwink:

Anywhere between 22-24 in. Of vacuum

A healthy motor with good tune will idle at around -20" of vacuum.

After the car is warmed up my s2000 is -22 to -23 at idle. This is with stock cams. The bigger the cams and the more the over lap the lower the vacuum will be at idle.

Yep stock motor generally runs between -21/-22. As load changes like running headlights or heat soaked/fans/a/c going you will see vac raise -19/-20

Mines always -10 at idle pretty much. Hmm.

-12 when engine braking.

After the engine is warm mine floats between 18-20 mmHG