New gauge idea...High pressure fuel

[Reb.B]

Somebody needs to come up with a gauge to moniter high pressure fuel and the fuel set. I know snap on and other plug in ones read fuel pressure, but something small on the dash or pillar might be nice.

 

[JCleary]

SPA makes a dual gauge that will do rail pressure and oil pressure.

 

[Reb.B]

does it hook right into the rail, or into the ecm?

 

[GWoody]

Taps into a wire at the factory rail pressure sender.

 

[JCleary]

When I get mine I'll be tapping a wire from the plug on the rail pressure sensor of whatever pressure box I'm running, leaving the stock wire harness untouched.



If you tap the stock wire and are running a pressure box, you'll get the fooled readings.

 

[hasselbach]

When I get mine I'll be tapping a wire from the plug on the rail pressure sensor of whatever pressure box I'm running, leaving the stock wire harness untouched.



If you tap the stock wire and are running a pressure box, you'll get the fooled readings.

Isn't it the other way? If you tap into the box, won't it show the fooled reading? I would think directly off the sensor would be the choice?

 

[Scrappy]

if you tap into the sensor side of the box, you will be seeing the actual readings. Post box will be fooled.

 

[JCleary]

Isn't it the other way? If you tap into the box, won't it show the fooled reading? I would think directly off the sensor would be the choice?

The pressure box has a plug that goes into the fuel rail. I'll tap the wire there, as opposed to tapping the wire that goes to the stock plug. If you tap the stock plug, you'll get fooled readings. I want my readings right off the rail. It would be interesting, though, to see what the box is telling the ecm.



I suppose you can get that from your attitude monitor, right?

 

[GWoody]

I made a pigtail that has the wire soldered into the factory type plug that can be removed with the gauge should I sell the truck, factry wiring is left virgin.