EEHack 2019 update

[rharris]

Hi Steve,

I am new to the eehack program and apparently new to this computer. From what I see so far it looks like a master piece for LT1 owners, thank you! I have loaded the program on my computer but it will not run, the program does not recognize the USB port. The cable was recently purchased from OBD diagnosics for my application. I have a 1994 corvette so it is a unique cable with a USB port, not a seriel port connection. The program comes up but when I try to connect it gives me an error. The program does not recognize the serial port and gives none as an option in settings. I am retired and left the computer world years ago so please make it simple. What am I doing wrong?

Thank you,
Rich Harris

[kur4o]

Hi Steve,

I am new to the eehack program and apparently new to this computer. From what I see so far it looks like a master piece for LT1 owners, thank you! I have loaded the program on my computer but it will not run, the program does not recognize the USB port. The cable was recently purchased from OBD diagnosics for my application. I have a 1994 corvette so it is a unique cable with a USB port, not a seriel port connection. The program comes up but when I try to connect it gives me an error. The program does not recognize the serial port and gives none as an option in settings. I am retired and left the computer world years ago so please make it simple. What am I doing wrong?

Thank you,
Rich Harris

Start troublshooting with the most obvious. Check if the device is installed properly. Open device manager and see if there are any available com ports. If non are present it might be a driver issue.

[NomakeWan]

Hi Steve,

I am new to the eehack program and apparently new to this computer. From what I see so far it looks like a master piece for LT1 owners, thank you! I have loaded the program on my computer but it will not run, the program does not recognize the USB port. The cable was recently purchased from OBD diagnosics for my application. I have a 1994 corvette so it is a unique cable with a USB port, not a seriel port connection. The program comes up but when I try to connect it gives me an error. The program does not recognize the serial port and gives none as an option in settings. I am retired and left the computer world years ago so please make it simple. What am I doing wrong?

Thank you,
Rich Harris

What kur4o said is correct. The most likely answer is that you do not have the correct driver for the cable. The cable is intended to use FTDI's VCP (Virtual COM Port) driver. If your system mistakenly installed a non-VCP driver (such as a D2XX driver), that means it's not exposing a COM Port to the system, which means $EEhack won't see it either. Please make sure you're using the latest VCP driver from FTDI, which can be found here: https://www.ftdichip.com/Drivers/VCP.htm


steveo,
I would've noticed the bug in 4.70 had either of my cars been patched, but as you recall the whole comms error thing on my '94 had me too spooked to use the flashing function in $EEhack. It was only once those problems started getting ironed out that I had enough confidence to try it on the '95, which led to finding the bug. I did go ahead and get a log for you on 4.70 regardless, and indeed, it works fine (except the analyzer, as you found out). I also noticed the message selection thing when testing graphing, but I guess I never spotted it in 4.8.2. That's my bad. I've attached the log just for completion's sake.

To be honest the only non-bug-related suggestions I could provide for features would be potentially rolling real-time analysis in, and having patches be individually selectable (for instance, if I want speedlog but not E-side comms). By real-time analysis I mean something like what tuning suites like Crome or Hondata have, where you can sit on a dyno with the laptop plugged in and work through your cells by changing throttle and load and watching the O2s. The Analyzer/Trimalyzer do this after the fact once data is collected, but I wonder if there's a way to have a realtime graphical representation so that you know when you have sufficient data collected to make cell adjustments?

Just thinking out loud. As I've said tons of times before, I love this program even as it is. :)

[steveo]

i could do realtime analysis but id rather you just hit the analyze button. it will work with the car running wont it? imo real tuning either happens at home sitting at a desk studying the data......or with an emulator

[NomakeWan]

Sure. But for example, say you have hundreds of records for a few cells and then...less than 70 for others. Less than 10 for still others. You won’t find that out until you analyze the data, then have to go try again. Some sort of visual cue for when sufficient data has been gathered for particular cells would be helpful for doing that analysis at your desk later, at least from my perspective. Similar to the map tracing functionality in other programs, I suppose, but tailored to how the Analyzer/Trimalyzer handle data to provide VE/MAF changes. Though since wideband O2 is accepted as an input, there’s no technical reason why wideband map tracing couldn’t work too, as many other suites do.

I do think there are lots of folks with dynos who would disagree with the assertion that you need to sit at your desk or bust out an Ostrich to do “real” tuning, though. Especially since I don’t know a good way to plug my Ostrich into a ‘95 LT1 PCM. ;)

[kur4o]

NomakeWan,

data tracing is really not possible due to pcm limitation. If the eside didn`t stop talking with the engine running alot more could have been made.

For now the extended version of eehack gives realtime control for any load dyno situation you have and for sure you can nail the tune in less than an hour with the real time VE table and Maf table control, add to that spark and fuel control and you can perfectly dial the engine with no analysis tools but only accurate wideband input.

By load dyno I mean the ability to set the engine running at 2000rpm and 90kp map for example, first adjust the ve cell at that range than adjust best spark advance while playing with the fuel and watch for the dyno output to get the best settings.

For the extended version of eehack search for a thread called the ultimate $EE patch thread.

[NomakeWan]

Oh, I believe it. But after seeing how the Analyzer/Trimalyzer work, it should be possible to create a pseudo-map-trace that is merely a visual representation of the MAF table or VE table, perhaps with colors for cells indicating at a glance whether that cell has sufficient data points to use for later analysis. Drive around as normal, logging the whole way, then glance and see if there is anything specific that was missed while still logging. Take care of those cells, then go ahead and run the analysis as normal.

[steveo]

ah, so what you're asking for is some kind of overview that tells you which areas of the log have enough data coverage. that could be useful. i just got confused because you asked for realtime analysis in the same sentence. that data is in trimalyzer (hover your mouse over a cell) but it's hard to overview in its current form.

i started working on the analyzer a bit last night and i was struggling with it a bit, it was written really poorly. i wonder if i should just rip the analyzer right out and embed trimalyzer in its place (does the eehack analyzer do anything cool that trimalyzer doesn't...?)