Have a question on ebp readings. I use a Sct livewire to read my ebp values. They are set to read in Kpa currently. At idle, on initial startup, it reads 430-440kpa. With an open vane at idle tune, it will go down to 340-360kpa. What is the normal range? I normally don’t monitor ebp, but it feels like I’m not getting the boost I should while towing on a tow tune. I only monitor boost with the factory gauge cluster. It will hit around 28psi on hard acceleration. I tested for boost leaks a while back and had no issues.
06 ebp normal readings
- Thread starter Diesel625
- Start date
Unfortunately I can’t help you with the sct ebp readings. I e been told what they’re supposed to be a couple times, and the numbers don’t make sense to me and I forget them.
You do need to remember though that the factory map sensor will only read 29psi of boost. That’s where it maxes out. If you’re running a bigger turbo or injectors, you need to get an aftermarket monitor of sorts, be it a mechanical gauge, or an edge with an added on boost sensor to read the higher pressures you’ll be putting out.
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Probably. The sct reads ebp, you just have yo know how to decipher it properly. If it’s in psi, I want to say something like 60 or 80 is basically atmospheric. If you can hook the scan gauge up and get some real ebp readings, it will be a lot easier for a few of us to help you.
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Just remember:
EBP_a is absolute pressure (that has the barometric pressure added in, or in other words it is in reference to absolute zero pressure or total vacuum).
EBP_g is gauge pressure. That pressure is in reference to atmospheric pressure, so it will read zero at atmospheric pressure.
Atmospheric pressure at sea level is about 14.7 psi, 100 kpa, or 29.92 inches Hg.
The ScanGauge is a good tool for reading PIDs (just not real good at reading codes).
If you have to program the Scangauge you can use these:
EBP_a is absolute pressure (that has the barometric pressure added in, or in other words it is in reference to absolute zero pressure or total vacuum).
EBP_g is gauge pressure. That pressure is in reference to atmospheric pressure, so it will read zero at atmospheric pressure.
Atmospheric pressure at sea level is about 14.7 psi, 100 kpa, or 29.92 inches Hg.
The ScanGauge is a good tool for reading PIDs (just not real good at reading codes).
If you have to program the Scangauge you can use these:
Exhaust Back Pressure |
TXD: 07E0221445 |
RXF: 046285140645 |
RXD: 3010 |
MTH: 001D00500000 |
NAM: EBP |
Exhaust Back Pressure Sensor Voltage |
TXD: 07E02216AE |
RXF: 0462451606AE |
RXD: 3010 |
MTH: 001309C40000 |
NAM: EPV |
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| ENGINE OPERATION | EBP PSIA | Sensor Volts |
| Light Acceleration (3s) | 21-22 psia | 0.8V |
| Cruise (20s) | 19-20 psia | 1.35V |
| Hard Acceleration (37s) | 40-42 psia | 3.6V |
| Coast (50s) | 16-17 psia | 1.06V |
| Cold idle | 14.7 - 15.2 psia | |
| Cold idle - high rpm | 15-16 psia | |
| Hot idle | 17-18 psia | |
| Key On | 14.7 psia | |
| Cranking | 14.9 psia | |
| Low idle, 690 rpm | 15-16 psia cold 17-18 psia hot | |
| High idle, 1200 rpm | 18 psia |
EBP_Des is another important PID, but I do not know the x=gauge programming for it. It may also be called EP DSD in a scan tool.
It is the "desired" EBP pressure (what the PCM wants to see). Comparing it to the actual EBP seen by the PCM can sometimes be helpful.
You might do some searching for the x-gauge programming for that PID, or contact the ScanGauge folks. If you find it, please post it here.
It is the "desired" EBP pressure (what the PCM wants to see). Comparing it to the actual EBP seen by the PCM can sometimes be helpful.
You might do some searching for the x-gauge programming for that PID, or contact the ScanGauge folks. If you find it, please post it here.
I didn’t have a chance to fool with the scan gauge and add pids, but did monitor data. Using the scangauge, measuring in psi, I get 50.5-53.2 on hard acceleration. The other values I get are pretty much spot on with the provided data from bismic.
That’s not too bad, what is vgt % towards the end of the pull? But not after you let out. Also, does this truck still have a cat?
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Ok, that’s normal, when you did your boost leak test, how did you do it? And is the egr still on the truck? Including a cooler that flows exhaust? If so, I’ve seen egr valves leak, that don’t really show up on the computer, but a pressurized boost leak test, you can hear air from the tail pipe. Also seen quite a few lately that the valve is leaking externally, like from where the metal is crimped around the plastic at the top, or the cardboard gasket where it seals to the intake. Another thing to check would be fuel pressure, make sure it never drops below 45psi, even on a hard pull. Seen plenty that putt putting around town are fine, but once some fuel is demanded it’ll drop to 10ish and kinda fall on its face.
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