trik396

I am very pleased with the new rail pressure guage from Quadzilla. Very easy install and very cool display. It is interesting to see torque management in action. Every shift you can see rail pressure drop 2-3000psi. I guess that is torque managment working...?
Anyhow, I'm seeing 4800psi at idle in gear and the max number I've seen so far is 16000psi. I was in heavy traffic all day yesterday. Today I'm going to get her on the highway and check some pressures.
For the price, this thing rocks...

wap

I can see over 16k cruisin up a hill. Have you floor it yet?

goodeyesniper75

Pics?........

trik396

Haven't been able to floor it due to traffic. Haven't gone more than 45-50mph. Maybe I'll snap some pics today... I finally have some time...

trlman

smarty on 3 std with mild tm rail pressure 24000 but drop fuel pressure down to 4psi sure am glad gdp kit got here yesterday, thanks larry!

53 willys

4800psi seems low??? my truck idles at 7000-7500??? (6 speed, out of gear)
you would think having yours in gear would make it read even higher, right????

trik396

53, I don't know... Does anyone know what the norm is for idle in gear pressure?
Truck runs like a beast. Only pressure is from Quad's XZT.

qzilla

You do have the Rail Pressure gauge plugged in first right? If not it will never read right?

I would say that 6000-7000 is normal at idle but, I have seen a lot of trucks with lower idle pressures. Usually they have a downloader!
You might uninstall the downloader later and see if the pressure changes.

trik396

I can do that, but she runs so good now, why bother...?... Unless I'm hurting something???

btw- I can't get my pics to download here. They are on another "cummins" site...

trik396

Also, Quad, I don't have anything else plugged into rail pressure except your new guage. And it only plugs in one way...

qzilla

I thought you had the XZT plugged in as well!

It is probably not hurting anything but, it is odd to be that low on a 600 truck. I have seen it so it is not unheard of but, it sounds like Diablo might be doing stuff even at idle? Maybe so they can fuel harder and have a smooth idle?

morkable

Mine sits at around 5k at idle. I am going to get quads unit, just for the data logging capabilities

Kevin

trik396

Quad, I do have the xzt plugged in as always... ??? The only time I take it off I use the bypass plug... Am I missing something here...? XZT doesn't plug into rail pressure sensor... does it? Even so, I have the new guage hooked up right at the sensor then whatever else is plugged in after... Let me know if this is correct...? I'm losing it now...
STARTING A NEW THREAD....

wap

I saw you other thread, that explains the low readings.

trik396

What explains them.... I'm lost, more than usual...