Stock Boost Gauge And Ebc Guage?

[Daboss]

Just wanted to know if these readings are right? The stock and ebc boost gauage differ so much on idle posted a pic tell me what you guys think.

[paulr33]

idle should be near -500mmgh, so the stock one is correct

your electronic one is incorrect

where is the signal for the elctornic unit coming from?

check the tubing, check for blockages, leaks etc

[BHDave]

lol

have you maybe considered that each one is using different units? That is 17incheshg is pretty close to 430mmhg which is fairly close to what your stock gauge shows?

[paulr33]

good spot dave

[Daboss]

lol

have you maybe considered that each one is using different units? That is 17incheshg is pretty close to 430mmhg which is fairly close to what your stock gauge shows?

No thats 17 psi.

[paulr33]

with a - sign in front of it ?

[BHDave]

17inHg isn't 17psi, it's closer to 8.5psi (or in this case -8.5psi)

Typically imperial gauges (whether digital or anologue) show positive pressure as psi and negative pressure as inHg.

If your ebc displays psi then it is almost certainly displaying inHg at idle. Funnily enough my car used to idle between 17 and 18 inHg when i had the old auto meter gauge. With the Greddy gauge it's at about 400mmHg.

[Adriano]

Theres no such thing as -17psi, as long as you dont live in a black hole.

[Daboss]

17inHg isn't 17psi, it's closer to 8.5psi (or in this case -8.5psi)

Typically imperial gauges (whether digital or anologue) show positive pressure as psi and negative pressure as inHg.

If your ebc displays psi then it is almost certainly displaying inHg at idle. Funnily enough my car used to idle between 17 and 18 inHg when i had the old auto meter gauge. With the Greddy gauge it's at about 400mmHg.

Ok I just wanted to make sure everything was right? Yea that is -17 psi and I was also wondering what was wrong with because when boosting the ebc and stock boost guage are virtually identical but at idle its at -5 * 100mmhg and the ebc reads -17psi. So even if it says -17 psi 0n the ebc its reading inhg?