Ferraritech

Manifold air pressure (map) is at a vacuum with the throttle plate closed ie idle. all vehicles do it (except diesels cuz they don't have throttle plates). once the plate opens air is available and the vac will rise to zero then pass it into boost (with forced induction cars). so what you are experiencing is completely normal. + you might think about changing your power supply to something different such as a dedicated power wire due to the possibility of causing blown fuses, not to mention the possibility that if you plugged into some sort of computer power supply for fear of frying up a body computer or some other integral component. Don't mean to scare you but i work at a dealership and i have seen numerous external telephones, satellite radios, or other "extras" that have tapped into computer power supplies and certain power spikes can cost you $$$$$$$$. Just saying its not but 10 min to run a dedicated 12v power straight from the battery through the same spot that you ran the tube. Thats it i done. Hit me up if you need more info.

SpeedI2acerX

iTrader: (2)

^cool i did not know that. thanks

different view..

im a little bit taller so i can see the rpm over the boost gauge.

Papi4baby

iTrader: (1)

Thank you. You should rotate it clock wise a bit, so that it is center.

ksattic

iTrader: (5)

I understand what you are saying, but remember the X battery is in the trunk, so running the dedicated 12V supply is not as simple as running alongside the tube for the gauge.

I haven't had time to look, but there is probably a 12V supply distribution block in the front of the car that comes straight from the battery and is safe to tap into.

ZWingerRyRy

iTrader: (5)

Ill be posting a pic by pic for the Defi White Racer Gauge Install Does Not Require Control Unit This Gauge Is A Straight Standalone It comes with everything needed. (Pod,PodStand,Vac Tube,Boost Sensor)

goofygrin

iTrader: (5)

^ that looks good. OP is ok...

migs647

iTrader: (19)

The reason it is -20..... it's called vacuum vs boost. Like the poster above said... engines suck before they are blown. When they are idling it is pulling air in because none is being forced in with turbo. Once the turbo starts to spin up and pressurize the system, your boost goes up. Hope this helps.

RREvoX08

iTrader: (1)

i set mine in front of rpm also i can still see where the needle is all the way around, good job, only i wonder why you got 20 vac and i only get ten vac

ZWingerRyRy

iTrader: (5)

Defi Racer White Start Up And Shut Down

zTargeTz

iTrader: (2)

something is wrong with your install, vaccume/boost reference point, or engine

white_turbo

iTrader: (2)

Check your hose. It might just be pinched somewhere, especially if you are using an Autometer guage with those small plastic hose. I experienced the same thing on my car before, boost was reading 10psi, when in fact it was actually running at 15psi.

UntouchableEvo

iTrader: (1)

ZWingerRyRy that looks sharp and sexy, awesome work.

NateDaJew

iTrader: (3)

WOW thats hilarious. Good job on the install.

evo_q8

iTrader: (20)

We did an install on my friends X here in Kuwait.. (will post pics soon).. zwingerryry, if only i had seen where u had installed it! ... knowing that the pillar has an airbag, i put it on the dash.. looks pretty good coz we tried to hide all the wiring as much as we could..