Aftermarket management for 5 cylinders

[Billman]

Program is very easy i think with Megatune (program for Megasquirt but modified for VEMS.

[pnanassy]

Here some screenshots how the tuning software looks:















HTH,Peter

[kalsket]

I am runnig one 55pin PnP vems in my RS2, works just nice.
Actually I have installed 5 of those in Finland.

All that is needed is 5 wires through fire wall for Wibeband sensor.

theres no lowlevel programming to be done, VEMS can be supplied preconfigured.

For your local support check http://www.vems.co.uk/

[Jamo]

Cheers Peter.

I heard there was some initial low level programming that had to be done on the ECU?

Mind you if this is done prior to purchase I doubt this is an issue then.

[pnanassy]

Yepp,these are needed when some features must be set that the tuning software cant handle (because of the lack of properly programmed tuning software).

These low level programmings can be done via a "terminal program" such as windows has,and you have to enter commands (which are hidden in the wiki).With this routine you can/have to set ignition outputs and such.I usually get ECUs after this,but i can tell you its not the fun part messing with a software that has options that just wont work.

But on the other hand you have to set these things only once on a car/engine,and then you have:
-built in WBO2 driver circuit that works!
-Spark and fuel tables are easy to tune
-logging software is very powerfull and works great.

Soon we will get a proper boost control code,but its still a long ,very long way till we will have an ultimate VEMS software.

[aronmatic2]

its not so bad:

download all files

[pnanassy]

Köszönöm Áron,egy Úr vagy!

[pnanassy]

Well Jamo,it depends on what you need,i have base maps for
2.3 20VT with K24 (13.0@170km/h)
2.2 20VT with K24 (12.9@160)
2.3 20VT with K26/27 (11.47@197)
2.2 20VT with same 26/27 (11.8@185)
2.3 20VT with K27/29 (11.19@206)

mine is currently running with GT37 (12.19@197),so there are a lots of maps,and knowledge.
About other things you mentioned we should talk in email.

Peter

[Jamo]

You have PM sir, i'm sure the more info you can put up for the likes of S2central.net and co would be appreciated.

[Jamo]

I am runnig one 55pin PnP vems in my RS2, works just nice.
Actually I have installed 5 of those in Finland.

All that is needed is 5 wires through fire wall for Wibeband sensor.

theres no lowlevel programming to be done, VEMS can be supplied preconfigured.

For your local support check http://www.vems.co.uk/

Have you had any issues? Whats cold starting like?

[S2central.net]

This is a good thread guys - thanks to pnanassy and kalsket especially for real world info. Its early days for me in getting my head round this... I got this reply from Dave Walker @ Emerald... Interesting !

----------------------------------------------------------------------------------------
In a message dated 7/19/07 14:02:06 GMT Standard Time, nugentp@mac.com writes:
What I really need to know is when there will be a variant of the K3
ECU that supports distributorless ignition for a five cylinder engine
AND sequential injection into the bargain. What about support for knock
sensors - any plans for that ?

Hi Paul

One of the limitations of the current ECU is that we do not have enough drivers to do five injectors sequentially and five ignition coils. We have done a few five cylinder engines with dizzy and sequential injection - 10 valve and 20 valve on 60-2 and 36-1 trigger patterns. Our mate in Sweden has done a 650 bhp plus five cylinder which regularly breaks transmission components.

Knock sensing is not all it is cracked up to be. OE systems do not work at high rpm and high load and I got that from the man who did the knock sensing map for the Jaguar V8 engines. Also you need an engine dyno (got one of them) and pressure sensors direct into the cylinders to detect knock just before it starts and then filter out the noise that is not knock (haven't got that). It takes years, not hours to get the full knock map right.

Our next generation ECU will have more than enough drivers but at the moment five coils is not possible. I have passed your email to Karl (who does the electronics).

Cheers,

Dave

[kalsket]

Compared to that VEMS can do it all
- using original audi triggers, nothing to be added
- full sequential injection
- direct ignition up to 8cyl (not wasted spark)
- (CDI ignition is in testing and coming to production later)

[AnLe]

I agree with Dave Walkers comments on the knock sensing.
after every modification you should break an engine record the sound and try to listen to that exact sound and make desicion based on that is it knoking or not.

It'is basically and voice voicerecognise application, and every one toyed with that on computers or mobilephone dialing systems knows how sensitive it is for ambient noices and clear pronounsing, imagine that and then picture the knocking enviroment, 5 cylinders exploding every fracktion of an second, wastegate is opening and closing, 3" piping is houling, you drive over wellcovers and same time you brake with huge brembos and brakepads are whining and tyres are screaming, not to mention the fact all this is done in either rapidly increasing speed or slowing down. If Nokia cannot make it work, I dont think we are gonna see working sensing in 1000eur price range products.

In some night in bed I was thinking, why would not put dynamic compratio (pressure) sensor and measure that and if pressure rises before ingnition is made = knocking, works every time and should not be big issue to the software department. Well that is just one idea made in middle of the night..

[Flat on my back]

Another ecu to add to the list.

perfectpower.com

[Albie S2]

ecu

i am running one of these on my s2 3b with 5coils 60-2 pick-up with no prob

https://www.gotech.co.za

thks chris