Oil Gauge and Boost Gauge Questions

[Touge180]

What are the oil and boost gauges supposed to read at idle my firends is reading -25 psi of boost and the oil gauge is reading 10 at idle.

[SirWarrior]

10 is low. I get about 30. A little more if its cold.

[sLip techniques]

check for leaks, did you use teflon tape or rtv sealent on the threads when u installed the guages?

[420sx]

gauges are autometer right? defective. i had similar issues. :rant:

http://www.literalpolitics.com/images/deep-doodoo.jpg

[krustindumm]

are they electronic or mechanical?

Also the boost gauge is reading 25 inches of murcury (in.hg), not PSI.

[420sx]

mechanical. i have to send in my oil guage to exchange.

[sideview_180sx]

you should be more specific when the car is cold or warm. also how are you tapping the oil pressure line. are far as i know the boost line should read off the the wastegate line (correct me if i'm wrong)

[420sx]

you should be more specific when the car is cold or warm. also how are you tapping the oil pressure line. are far as i know the boost line should read off the the wastegate line (correct me if i'm wrong)

how the fuck else would you wanna do it beside oil pressure switch location???? wtf??

boost should read from TB location, most accurate reading.

you should know this shit

[DeatschWerks]

how the fuck else would you wanna do it beside oil pressure switch location???? wtf??


You can tap in at lots of places. I tapped in on my oil filter relocation kit.

10psi is somewhat low - what rpm does your car idle at? a low idle can cause low oil pressure. Does your oil pressure rise with rpm? If so, what does it rise to?

25 inhg is good vacuum.

[Yoshi]

25 inhg is good vacuum.

I 2nd that, 25 at idle is great.

[BillKlineVT]

25 in hg at idle is theoretically impossible, but then again it's an autometer. haha what am I talking about, I rock autometer too... minus my vdo boost gauge

[slammedS14]

get greddy guages...

[!Zar!]

You boost is about right.

I have mine running off of the fpr just as most everyone else I know does.

You oil pressure is a tad low, make sure you arn't low on oil.

If not, I wouldn't worry about it. Just make sure to not let it get below 5.

[GSXRJJordan]

If you get 0 lbs with the car off, and 25 in hg with the car at idle, that's a LOT of vacuum. That being said, a cheap gauge is gonna be off when you get that far out (it's meant to be most accurate right around 0).

You don't want to have the boost gauge running off the wastegate line, but it's not the end of the world (just might delay opening/closing). The end of the world is when you run it off the BOV line, according to folk tales. Everyone T's the FPR line for their gauges.

The oil reading can come from just about anywhere, I get mine from a spacer/remote oil filter block, but I guess you can go from stock sender location also. 10 pounds is low, but as posted, make sure it goes up as you rev.