If cylinders are with in +- 12 rpm or 25 in total from highest to lowest that is very normal on a Consult.Įven with a ring wear variance that reduced peak pressure by 50% the cylinder would contribute some rpm. The rpm created from a staic IAC percentage will vary with the amount of air slipping under TB and the accuracy of MAF so every Q will be different as to base rpm. I do a power balance on my Q every 30-90 days since so easy and have for past 10 years so I can see things others would miss but that doesn't translate to another Q. Power balance really was just to show a dead cylinder not to finely measure deviations.After you have done multihundreds with a Consult on your own car you get a feel for changes or odd results. Please post your results too, so that we can get an idea of how this is working!Ĭonsider that 1200/8= 150 rpm and since just killing fuel and spark still has the same IMEP dividing by 2 yielding 75 rpm is right. Isaac said he can fix this in the next revision. If you repeatedly click them, the software locks. The only 'bug' that I found, is that if you try to set the IAC opening by the 'sliders' in the software, you have to be very patient and click it up or down only one or two numbers at a time. pdf, but I think Q45.org will host any type of file. For ease of downloading, I converted them to a. Plus a summary page.įor others that want to post their results, I just copied the results under the 'summary' tab, and pasted them into Word. injector pulse width, timing advance, etc.)

or if the Q is compensating in another way (e.g. My results were very consistent with the truck, but everything was so close together on the Q that I can't really tell if the injectors are just clean. This latest version 1.36 sends a command to the AAC valve to hold it at a pre-set level. I was getting results all over the place. It took a while to figure out that the 'kill cylinder' command didn't also tell the ECU to hold everything else equal - so the ECU would just open the IAC/AAC valve more to compensate for the idle decrease from the dead cylinder. We've gone through several different revisions, and finally have something that appears to be giving consistent results. I have been working with Isaac for several weeks on getting a reliable 'power balance' feature in the software. I think this will work best if we can limit the conversation in this thread to that specific software. I think it might be useful for us to have a thread for the 'beta testers' of Isaac's Nissan OBD ScanTech.

Scantech nissan