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Is anyone having this issue on startup of the truck. The rail pressure max is reading this outrageous number. I fix it by pressing the RP psi screen as if I am wanting to change to some other read out and then immediately press the exit button to not make the change and everything goes back to normal. Any idea on the gliche.
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What is an RP?
2003- 3500 RWD Automatic. S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95, 50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC
Mine has done the same thing since I bought it. Mine happened if I let the truck sit to long with the key in the on position it would start doing that. No idea why it does it.Originally Posted by Larry1009
@Polaraco RP is "rail pressure".
I have not had this problem, I do think mine does not read correctly thow on certain settings.
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IGOTACUMMINS thanked for this post
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May God have mercy on me for saying this ... but I agree with @Polaraco ...
What the heck does RP stand for on your unit ???
Us older owners own older vehicles and don't have those new fandango electronic items like you younger people do.
And @Yamaha ... if you think your unit doesn't read correctly on certain settings, I'd be contacting my supplier in one quick hurry. These units are cheap, and the warrantee isn't for life, is it ?
Jim
2006 ~ 2500HD, Big Horn Edition, 5.9, 4x4, Q/Cab, 48RE, L/B, 3.73, S&B CAI & Snout, ProFlo 5" S/S exhaust, Smarty Touch, Oil ByPass Kit, 60 gal main tank, 110 gallon in-bed tank, XX-Fuel Filter System, Coolant Bypass Kit, Mag-Hytec front & rear end covers and trans pan, 285 x 70 x 17
"Freedom is never more than one generation away from extinction. We didn't pass it to our children in the bloodstream. It must be fought for, protected, and handed on for them to do the same, or one day we will spend our sunset years telling our children and our children’s children what it was once like in the United States, where men 'were' free." ~ Ronald Regan
Nothing to do with the Unit being faulty at the least I think it's just how it reads rail pressure when you are wide open throttle. I don't know how it reads the rail pressure im guessing some factory sensor or something. So if you would want exact and precise maybe put a real rail pressure gauge on it? i just use it for refrence to keep me from being to hard on it pulling hills and what not. It's not cheap nor does it require a warranty claim just a understanding of what your working with.
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Kids
2003- 3500 RWD Automatic. S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95, 50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC
Yamaha242LS thanked for this post
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Damn kids. LOL
2003- 3500 RWD Automatic. S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95, 50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC
My rail pressure don't do that but my boost gauge reads off any time I use the rt feature or unplug it and plug it in. And nearly every afternoon it's overheated sitting in my truck and don't work for the first 10-20 min driving till it cools down and I unplug it and plug it back in. Then the boost reads off. Besides that everything else has worked.
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Has anyone heard if there is going to be an update to fix some of the minor glitches on the ultra? I already have the latest update, but there still needs to be work done. With the key in the ON position my rail pressure numbers are showing in the millions and are jumping erratically. When I start the truck that stops, but my max still is reading that crazy number. I have to click on that parameter and exit back out and it resets those max numbers. It not hurting anything but it gets old when you have to do this just about everytime you start he truck. I saw on another post that there were others having this exact same thing happening.
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