Recent Posts

1

Software / Re: vems software from 2011

« Last post by jrussell on July 09, 2024, 01:51:26 pm »

All the released firmware versions are available. The latest VemsTune is backward compatible and is what should be used.

As far as upgrading firmware from 1.0.7x to 1.2.42... there are SO MANY feature additions and code changes in that span, it would need a re-tune at the very least. With that big of a jump you can think of it as a whole new ECU upgrade.

You can go through the FirmwareChanges: https://www.vems.hu/wiki/index.php?page=GenBoard%2FUnderDevelopment%2FFirmwareChanges which is standard best practice when upgrading firmware and read from installed firmware version to what you want to upgrade to, and those features will need to be tuned or at least looked at. The list is massive between 1.0.7x and 1.2.42 or even 1.2.31.

You can easily keep 1.0.7x and tune it for the changes. Just download the newest VemsTune and connect to the ECU, adjust.

2

General Discussion / Re: Old Vems Update

« Last post by k33emo on July 09, 2024, 11:40:37 am »

Morning did you have any success updating to he newer firmware ?

3

Software / vems software from 2011

« Last post by k33emo on July 09, 2024, 10:25:13 am »

Morning im looking to get my race car back up and running again last ran in 2009 i believe from reading old messages with rob that i was on v 1.073 or1.078 firmware is it possible to still download this version and will it be possible to update to the latest software without losing the info and map allready on my ecu
reason for question is i changes tps sensor and throttle bodies so need to re calibrate to the new sensors etc to get it to run,
also what serial connections are being used successfully links would be appriciated

4

Ignition / Re: strange issues

« Last post by yhzman on June 18, 2024, 04:57:11 pm »

Sorry  i should have mentioned we tried driving the coils directly with all 7 amp outputs. no luck. or in test mode.
Would taking a picture of the inside of module help determine if the 7 amp outlets are operational?

5

Configuration / Re: LOADING config files

« Last post by jrussell on June 18, 2024, 04:40:20 pm »

Depends where you're starting from and ending at as far as firmware versions. I'm going to guess you were going from a very old firmware to one of the more current ones. 1.2.31 and 1.2.38 are the most common these days, unless you need one of the features from the newer firmwares. You should always check the firmware changes page in the wiki and read the changes from old version to new version so you can check settings after the firmware update. https://www.vems.hu/wiki/index.php?page=GenBoard%2FUnderDevelopment%2FFirmwareChanges

6

Ignition / Re: strange issues

« Last post by jrussell on June 18, 2024, 04:36:19 pm »

Ignition outputs are configured at order time. So not knowing how the ECU was built, it's hard to help too much here in a direct manner. If the ec36-35 output (and other 7 you tried) are configured with IGBTs, they won't work with the ignition amplifier/ignitor. They drive a coil directly by grounding it. Could explain your issues there. When you took apart the ECU, if there's 3 rows of transistors and the row nearest the case side is populated, that would be 6 of the 8 ignition channels. If there's transistors in that row, they are configured with IGBTs and meant to drive a coil directly.

7

Configuration / LOADING config files

« Last post by yhzman on June 18, 2024, 02:57:37 pm »

Hello. Quite new to vems, but been working in auto field for 30+ years. Have what i consider an odd problem with this unit.
I had been using an older version of firmware and had problems with spark-see in ignition section- so I loaded the latest version of the firmware and also updated the vemstune.
Before this I had saved 3 config files from the older firmware and the car ran and had no issues when running config verification.
Now with the new firmware when I load the config it fails to load. Loads for 70 seconds and says unable to verify config.
Do I  need to start over?

8

Ignition / strange issues

« Last post by yhzman on June 18, 2024, 02:42:43 pm »

Hello everyone. i'm working on my brothers 85 peugeot that the previous owner installed vems in, along with other goodies.
The problem has always been starting the car. he wired the spark out to the stepper motor outputs in the ec18 plug with a ignition amplifier.
 the spark was always weak cranking so the car would start when turning key from start to run. tried changing to pin 35 and all of the other 7 amp outputs and have no spark. Even when going into test mode.
 loaded new firmware and updated vemstune. same result.
 took apart vems ecu, no visually burned circuits.
Need help, suggestions.
Thanks
Have another issue I will post in fuel injection.

9

Configuration / Re: Launch control config requirements

« Last post by four0four on January 09, 2024, 02:43:04 am »

ch6, but I tried a few. yes, they show up in ADC ALL - hence my pondering whether or not "launchcontrolsw" is a flag calculated in VEMSTune rather than VEMS.

I've read as much as I can find about this in F1 help, wiki, and other things

here should be the most recent config! I'm not sure a log would be more helpful, but let me know if you'd rather one

10

Configuration / Re: Launch control config requirements

« Last post by jrussell on January 08, 2024, 06:24:31 pm »

Which analog input did you use for the switch? In the ADC ALL screen, does the input change with switch movement? Or do you want it wheelspeed based?

I suggest going to the Motorsports->Launch Control screen and press the F1 key for the help and read that if you haven't already.

Beyond that, it's hard to help without knowing how you're trying to set it up specifically. A .vemscfg or .vemslog would be helpful. Help -> Vems Sharing Center is a quick and convenient way to share vemscfg and log files if you'd like to do that.