Robinjo
Goblin Guru
Easy answer is for you to buy their stuff and they know it works so they can assist with troubleshooting issues..
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Wiring Wideband O2 Sensors
- Thread starter Rauq
- Start date
Not quite sure if I understand what you mean. I should spend another $249 to get their service for troubleshooting?
I am not sure what the bug is.
1. Is the bug that people on HP Tuners Forum or here have constant issues with the WB Serial reading in VCM Scanner? I can at least confirm that Ross does not have the Pro Feature set. But maybe he has another device... Or
2. Is the bug that you can make it work with the right Serial Adapter, restarts,... which should NOT work when you don't have the Pro Feature Set.
The way I understand the Support Ticket, I think it's 2.
Attached the full correspondence with HP Tuner Support.
I am not sure what the bug is.
1. Is the bug that people on HP Tuners Forum or here have constant issues with the WB Serial reading in VCM Scanner? I can at least confirm that Ross does not have the Pro Feature set. But maybe he has another device... Or
2. Is the bug that you can make it work with the right Serial Adapter, restarts,... which should NOT work when you don't have the Pro Feature Set.
The way I understand the Support Ticket, I think it's 2.
Attached the full correspondence with HP Tuner Support.
Ross
Goblin Guru
The pro feature set is probably more reliable, as the serial-2-USB connection has always been a bit flakey.
I made the mistake of updating to VCM Editor & Scanner 5.0.4 about 6 months ago. I mostly pull codes and do the occasional data log now, I did most of my tuning a few years ago, so I haven't been using the wideband O2 sensor with the serial-2-USB with this new software version yet.
I made the mistake of updating to VCM Editor & Scanner 5.0.4 about 6 months ago. I mostly pull codes and do the occasional data log now, I did most of my tuning a few years ago, so I haven't been using the wideband O2 sensor with the serial-2-USB with this new software version yet.
I agree the pro feature set (Which in my understanding is just the Analog inputs) is probably more reliable. I have that solution already working with the AC pressure Sensor. But both come with the extra Digital to Analog and Analog to Digital conversion which introduce more and more unnecessary tolerance. Cleanest way of bringing in external WB is over the Serial Port as a digital Signal.
Rauq
Goblin Guru
@Ross have you tried downgrading your software install version? There's a chance the software update pushed a firmware update to your interface which will prevent it from working with older software versions, but if you want to try a rollback, I have most of the older VCM Suite revs if you want one. Not sure if you lost any features with the upgrade, just wanted to put that out there.
@mike_sno are you really that convinced that going through a serial port is going to make enough of a difference in your tuning process? I wired my wideband through the AC pressure sensor input and haven't had to think about that connection ever since. I think the margin of error between the two input methods is smaller than both the quality of data correlation in HP Tuners, and the effectiveness of the control routine in the ECM. If you set your Power Enrichment richer by 0.1 AFR, that's probably more than enough compensation for any resolution or accuracy you're losing by going through the ECM vs direct into a computer via serial connection.
@mike_sno are you really that convinced that going through a serial port is going to make enough of a difference in your tuning process? I wired my wideband through the AC pressure sensor input and haven't had to think about that connection ever since. I think the margin of error between the two input methods is smaller than both the quality of data correlation in HP Tuners, and the effectiveness of the control routine in the ECM. If you set your Power Enrichment richer by 0.1 AFR, that's probably more than enough compensation for any resolution or accuracy you're losing by going through the ECM vs direct into a computer via serial connection.
I would be interested in that too.
Hmm, good question. There is a long discussion on the HP Tuners forum about the accuracy of "cheap/retail" WB Sensors. That being said there is so much tolerance in the overall process... I think it helps if you get as much as possible tolerance out of it. I am in no way an experienced tuner. That being said, I believe I need the most technical help and accuracy I can get from the tools I use to compensate that. (This applies to everything I do. A professional can work with semi professional tools, but an unprofessional needs the best tool to get the same outcome. If that make sense.)
I don't think I have seen any conversations on HPT concerning the accuracy of serial vs existing ECM sensor input. But I haven't searched the historical threads to see what was said in the past. Most of the current recommendations by the pro tuners, that do remote tunes, is to video you screen and gauge at the same time and if necessary, adjust your math formula to match the gauge.
You should only be tuning with the wideband at pretty much wide-open throttle anyway and should be using fuel trims/narrow band o2's for everything else. Unless your ECM is one of the strange non-standard GM way of doing things.
You should only be tuning with the wideband at pretty much wide-open throttle anyway and should be using fuel trims/narrow band o2's for everything else. Unless your ECM is one of the strange non-standard GM way of doing things.
I haven't seen that(ECM VS Serial) either. But here is the link to the conversation I meant. https://forum.hptuners.com/showthread.php?21019-Wideband-Accuracy-Facts-amp-Issues
Interesting work around with the video.
Not going to read through 7 pages. The original post is 16 years old so I’m not going to put a lot of faith into which is most accurate. The acceptable standard is AEM so that is what I would go with if I needed one.
Are there post in the thread covering your concern of serial vs analog feed to the ECM?
Are there post in the thread covering your concern of serial vs analog feed to the ECM?
The Tripp Lite adapter came yesterday. Spend a few hours trying to get it work, but no success. Lead me to belive the theory that this feature was disabled in a later version of vcm scanner could be true.
Yep and probably none of them know that this is a pro feature.
Yeah, have to try that.
No. I don’t know that you understand what the pro feature is. They are trying to tie use the gauge analog out to serial connector. Is that not what you are trying to do?
Read the PDF I uploaded before you judge what I understand or not.
HPT support is notoriously unhelpful and good at deflecting issues. Serial connectivity is possible at least on some versions. That said, maybe I’ve lost track of what you are trying to do. I thought you were trying to use a serial connection for your wideband into an hpt log.
Agree, I think it's just an excuse of saying the pro feature would be necessary. No one else seems to have it.
Agree too. But seems like not in my version. Will check for an older one.
That's correct and what I want to do. Serial read of the WB directly in HP Tuners.