I just finished up installing a Nisei LICP and ETS UICP. Before this I had -20PSI of vacuum at idle, no I'm right around -17. Is that normal?

I really took my time, double and triple checked all the fittings. I hear no leaks and the car seems to run fine, I haven't went out and ran it WOT yet because I have to leave in a few hours on a 300 mile trip and if something did come loose on a WOT run, I wouldn't have time to fix it, so I figure I'll just take it easy until I get back.

It already has an ETS FMIC, my vacuum did not change when that was installed.

Things I did at the same time: change spark plugs, cleaned HKS RS intake, changed the oil, installed KW V3's and Tein plates.

Any ideas here, or is it normal to loose a little vacuum?

Do I need to disconnect the battery and let things reset?

 

Nobody?

 

boost/vac leak.

 

no way

 

did you use a torque wrench for your plugs? could be leaking there.

 

isn't -17hg normal? boost leak test...just did one yesterday 3 impressive leaks found...1 to go lol

 

Either that or tein plates

 

I look it over when I get home Sunday.

When I got to my destination, it was back up to -20psi. Weird. Or does it take time to adjust itself?