VEMS motronic, need some help

[S2central.net]

The joys of aftermarket ECUs once more - I just hate Megatune - it is so clunky to look at and the manual is poor also.

Paul

[a4kquattro]

scratch that, the final issue wasn't the software, it was testing on my desktop with a real serial port. I've never before had a problem with the PCMCIA serial card I use in my laptop (it would upload the firmware and verify fine using this device, however megatune had a problem with it!)

oddly enough, megatune seems to like my usb to serial converter better than the pcmcia to serial adapter ? Whatever, it works, off to testing on the car and tuning!

Thanks for all the help, I might be back with more questions

[BRY]

Excellent news
Keep us informed, I prefer clunky stuff that I can play with than sealed stuff that I can't.

[4WheelDrifter]

I thought you'd be a Motronic guru by now Bry.

[BRY]

Does Guru = Chip copier?

[4WheelDrifter]

Does Guru = Chip copier?

I believe some people think so.

[BRY]

I'll order a load of blank chips then. :mischeif:

[4WheelDrifter]

Ask the dude for one of his DVDs, get some WG springs and you'll be well away.

[spink]

here we go again,the other thread a few weeks back was hilarious(before it was edited)

[a4kquattro]

aaaaand its running:



ignore the 'misfire' bit, I was testing some things..

Things that need to be sorted out:

1) Idle control: it was hunting badly using the config I saved from the files marcel posted. The car runs much better with it disabled at the moment.

2) connect the wideband sender. This ECU was configured to send the wideband signals over unused wiring in the engine bay, so a harness will need to be made.

Otherwise, I'm damned impressed. Too bad the wiring for the reference sender needs to be reversed otherwise it would be completely plug and play. I'd suggest that maybe VEMS could build a simple short jumper cable with a male and female 3 pin audi plug on either end so that the wiring can be reversed without having to re-pin the connector..

Great job to the VEMS team and everyone on here for their help, looking forward to playing some more!

[K7ERG]

Sounds good looking at getting this in the next few weeks.

[GazzaG60]

sorry i got my 1.1's and 1.0's mixed up.

good to hear its running.

wouldn't particularly say megatune was clunky. its actually a nice SW to use. feature sets change so often and depending on what you need depends on what you compile.

my idle is ok other than not catching too well every time. add 2.5% to the DC showed for the idle in the real time menu to set the idle.


must say i couldn't get marcels map to run. not sure if its my setup with the turbo and all but it didn't like it.

[Greg_S]

Good you have got it up and working. ive seen some pics of the V8 Coupe before, wondered who was the owner of it

[S2central.net]

Does Guru = Chip copier?

If only it was that easy

[a4kquattro]

ok, more questions to those who are in the know!

I have something strange going on with regards to boost control. Currently running firmware 1.1.23. When I go in to change values in the map vs. rpm table or any of the numbers in the secondary boost control screen the engine will miss under load, almost as if the fuel injectors are receiving a different duty cycle (boost does not change during this).

Also I ran into some triggering issues with the car around 6500 rpm. Should I be running a specific firmware over another to potentially solve this issue? I tried loading 1.0.73 and 1.1.29, neither of which allowed the car to run after loading the firmware (I didn't agressively investigate necessary config file changes so my bad there).

So what are you VEMS guys w/auditrigger setup running for firmware? How about boost control settings?

Thanks!