Recent Posts

1

Modifications and Repairs / no serial nr

« Last post by izmirliss on February 10, 2020, 08:00:07 pm »

hello
i bougt nev v3 board with sr nr 19023
after a few use ecu always in boot mode no firmware update and atmega has too much heat but still works
when i try to log on with vemstune ecu sr nr 00000 fw 1.2.38
any advice
thank you

2

General Discussion / UK based tuning

« Last post by Seight-v8 on February 08, 2020, 01:57:45 pm »

hello all,

Anywhere in the UK that does VEMS tuning?

Cars had 5 years of upgrades, managed to get 50miles in last year before the weather changed, so missed last years opportunity.

Looking to get a tuning session done this year in the summer, and want to get something organised.

anyone help.

thanks
scott

3

Configuration / Re: LPG fuel pressure correction

« Last post by lost on February 04, 2020, 01:10:46 am »

Can anyone help i want to connect two map sensors (same, on on lpg pressure hose, second on vacuum hose) to vems diff amp on vems v3.5.

It also has temp sensor for LPG

4

Triggering / Re: Auditrigger-engine not starting

« Last post by Reini1977 on January 30, 2020, 09:49:48 am »

thank you

will do so, when i have access to my Notebook again..tomorrow

yes, swapped the polarity, can verify with scope if necessary...

also, i have a nice trigger signal and rpm

plugs are firing, injectors are working

is it possible that i have to shift the ignition order?

regards

5

Triggering / Re: Auditrigger-engine not starting

« Last post by MWfire on January 30, 2020, 03:16:58 am »

Upload a config and trigger log.
Did you change polarity of tdc home sensor?

6

Triggering / Auditrigger-engine not starting

« Last post by Reini1977 on January 30, 2020, 01:46:14 am »

hi all

built a new I5 20V motor, FW 1.2.38

i have rpm signal, i have fuel injection, i have spark, but engine behave as following

when i set cam sync wheel to TDC (wrong setup) , engine starts, but a bit on the gas, and i get trigger errors

when i set cam sync so, that the hall sensor is in the window exactly when crankhome pin is on the VR sensor (setup correct like factory), i can do what i want, the engine doenst start

tried everything, richening up, leaning out, use different offset angles, nothing

it sounds like from time to time i have a hissing noise in the exhaust, but nothing more

can you give me a direction?

regards

7

General Discussion / Re: I want fire and flames rev. limit

« Last post by gunni on January 21, 2020, 12:41:21 pm »

Just try it and report back.

8

General Discussion / VEMS for sale on ebay

« Last post by paul_f on January 21, 2020, 02:37:25 am »

Hi all,

I am selling my VEMS on eBay - https://www.ebay.co.uk/itm/124053604512

Cheers
Paul

9

General Discussion / Re: I want fire and flames rev. limit

« Last post by Mac-B on January 20, 2020, 10:58:48 pm »

According to this:
http://www.vems.hu/wiki/index.php?page=MembersPage%2FGaborRacz%2FNewAlsLaunchAndOthers

and more precisely this chart:
http://www.vems.hu/files/Manual/Images/als.png

i was expecting the behaviour i described above..... only active after big throttle input and
as i limited the time to 5s it should be safe ?
i´ll use less retard the link above suggests " The highest ignition advance value plus 5-10", imho relative --> i´ll start with 10° absolute (ATDC)

the biggest open question is the behaviour of the "Maximum fuel enrichment". If zero --> no fuel in ALS OR full VE value and no add-on value ?

I´ll try it out, my hope was that somebody can explain me in theory first what the values mean, the F1 help is not self-explaining on that feature.

10

General Discussion / Re: I want fire and flames rev. limit

« Last post by gunni on January 20, 2020, 06:53:42 pm »

You need to keep the ALS tight, otherwise according to your settings it would be on basically all the time.

Reactivation 5%
max retard at 2% TPS and min at 4% TPS, this means only below 4% will there be anything happening and only below 2% will it all be happening.
ALS retard at 2000rpm and 2100rpm, this means above 2100rpm you´ll have the full effect. It´ll turn off below 2000rpm

I´d try about -20° absolute as a start, otherwise there is a chance you might not be able to fire the mixture at all.

Try it

Also what is add-on?
Do some logs and put them up in the vemstune sharing center .