OK, let's sort this out.

1. The EBPV PID is a different beast, let's pour some Drano on that thought and let it flush. We need to be focusing on the Exhaust Back Pressure Sensor.

Now let's look at the EBP sensor reading on an SCT. I'm a bit lost with the SCT product, so all I have are some theories. EBP sensors rarely read low when they go bad - they typically read high. It's very possible your SCT product was reading the EBPs at 12 PSI above atmospheric, and the new sensor is doing precisely what it's supposed to. If the EBPs didn't work at all, it should throw a P0470, P0472, or a P0473 code during KOEO. In case you're wondering, the other P047x codes are for when the engine is running.

Grab the old EBP sensor, plug it into this pigtail without installing, and do your KOEO again. Repeat the process with the new sensor. By doing the exact same test back-to-back, you are assured you're using the same PID and process for both sensors.

Did you order the Exhaust Back Pressure Sensor - or something that mentioned back pressure while you were speed reading? Not poking you with a stick here... I am frequently guilty of speed reading, and that's how I came up with the question.

If it maxes out at 5, you may very well be looking at volts, but that would mean you are hammering the EBPs with a total of 53-54 PSI backpressure (including atmospheric pressure).

Very low EBP combined with very low MAP at WOT would be a strong indicator of exhaust leaks. That much soot should be easy to spot.

 

Ok so I just got off of the phone with Edge tech support trying to find out what exactly is being displayed on the monitor (i.e. volts or psi).

Honestly I wasn't too impressed with the answer that I got to that question....unless I misunderstood what he was saying. He said that it reads whatever the PCM reads. When I asked specifically what was displayed whether it was psi or volts, he said that he wasn't sure which it was displaying since he was not sure if the PCM has already converted it yet or not.

Now that being said, what he told me next was a bit more comforting. After looking up my vehicle and the serial # of the unit, he stated that the EBP display should read the same as the boost. Not sure why that is from what so many others, including Tugly, have said but if that is how their equipment works then so be it.

Now what I don't understand is why the EBP tops out at around 6 when I do see more boost than that (boost reading from monitor plugged into PCM).

So long story short, going off of what I was just told by Edge, I think that my EBP is doing what it is supposed to.

Tugly, when I get home I will test against the old sensor as you stated/requested. I appreciate all of your help. Now I am off to spend more of my vacation trying to solve my TC no locking issues.

Thanks again to all.