Sounds a little low to me. They should idle somewhere in the neighborhood of 7K with it fluctuating up and down a few hundred psi.

Of course it w can depend on a lot of things. Also even though you get a rail pressure gauge it is only as good as the calibration that is in it. That inlcudes our digital one.

 

Maybe there is a diffeence between 555's and 600/610's? Injector differences can/could effect idle pressure?

 

glad you guys are liking the gauge. the 03-04s idle at about 5,000 PSI. unless you are mucking with the ECM that is what they will run at. not surprised that the later trucks are running at higher pressure/idle.

Quad is telling the truth about the gauge. if you hook it up directly to the sensor, it will read accurately. I've heard terms like "modifying the sensor" in relationship to pressure boxes so I want to underscore what Quad said. pressure boxes do not modify the sensor! So when you hook up the rail pressure guage like this:

sensor <-- rail pressure harness <-- pressure box <-- factory harness

you are "stacking" the gauge with the box and in this configuration the gauge reads the RESULT OF PRESSURE FOOLING (actual pressure). now, then, if you use TWO gauges, like this:

sensor <--gauge1 <-- box <--gauge2 <--factory harness

you can witness pressure fooling in all its glory. gauge 1 will read actual pressure and gauge 2 will read pressure fooling signal from the pressure box, which will be the same as if the dealer hooked up a mobile DRB and tried to read rail pressure while you drive.

sorry I'll watch this thread more closely if you guys have any other questions about the gauge -- Doug

 

I have an 06 and I’ve been looking for this DiProcol Rail Pressure Gauge online and can’t find it anywhere. Can someone tell me were I can pick this thing up at and how much? Would also like to get there fuel pressure gauge too. Will this fit in the autometer steering column mount? Thanks for the info all.

 

We should see the gauge become available at major distributors soon. The first group of gauges were personally tested 100% on a vehicle prior to releasing QA work to production. The release plan has been to first insure that a strong sample of the first gauges were tested in on a real truck before the remainder was released for wider distribution.

So the bottleneck has been the completion of these tests and the availability of tested harnesses. Both of those bottlenecks are relieved now, and its all a matter of UPS now. I'm afraid I don't know when exactly the gauges will appear; all I can say now is that finally all the major bottlenecks are relieved.

 

Dougs kit is the best! The analog gauge is easy to read versus a digital. Ive only tried it out for one day and it is kick edit!

Thanks Doug !!

 

how about a retail price what there asking for them? Its not always the pressure that kills the inj. could be the spike in pressure when you lift this gauge should show you this right?

 

Well finally got the Rail Pressure guage installed. Not bad, it took me about an hour. But that was mainly spent trying figure out how to best manage all of the wires, tubes, controller cables going through the firewall. 5 gauge wiring and sensor cables and 3 controller boxes all fed through the same 1" hole drilled in the plug in the firewall. With all the Dodge wiring web and mine together kind of busy under the dash.

Well I do have one suggestion on the lighting/power wiring harness. The dimmer pod is too close to the gauge for me. It is not long enough to reach outside of the steering column pod and not be stretched against the pod. I had to wrap it up some inside the pod. This makes the sensor connector close to the edge of the pod. It works ok because I did tap the dimmer power for the light wire and don't need access to the gauge light dimmer pod.

Just went for a short test drive. I have disconnected the EZ, unloaded the downloader and set the TST 0/0. That is as close to stock as I can get.

Idle at 7k in nuetral. Idles about 7.5k in drive stopped. In general the gauge mimics the movement of my tach almost exactly on throttle. The movement fluctuations going through the rpm range and shifts is in sync with the boost levels. This does make since ECM sees more air and matches with more fuel.

With stock settings I saw max of about 23.5k on hard acceleration. With TST on 3/1 only saw about 23k on hard acceleration on my short test run. I will be plugging the EZ back in and doing more testing. Tomorrow I plan on being at the track again and will see what Smarty stacked will show and see if I can determine exactly at what setting point I drain the rail.

Very happy with the guage, THANKS DOUG for the R&D .

BTW after I connected the battery cables my dam trans temp gauge reads 150* now instead of 0. Don't know how that happened. I did have my console pulled off to get to other wiring, but should not have had any effect on those guages. The only wiring to that gauge is the lighting and it still works fine. The sensor cable is one piece from inside gauge to sensor, kind of hard to screw that up.

Couple of pics, dam camera seems to have poor vision lately also.

 

Guess I'll have to start saving my nickels and dimes for one.
But the first I want the Glacier Walbro kit with the 2 micron filter.

MikeyB

 

Twice now, during a short ride. I have gotten erratic readings. The pressure drops to 3000 when I let off the throttle.& hangs there till I apply throttle.
Today a short trip to the store same story, but on the way home maintained 7000 at idle.