What is needed to run with VEMS?

[Jonas_R]

So need a bit of help here from the VEMS users.

If i buy this from Vems http://shop.vems.hu/catalog/product_...roducts_id=122

Is that all I need to get going?

Also I have a 3b but it is converted to AAN ECU with 034motorsport multi coils. So all sensors are 3B.

So I would buy the Vems for AAN right?

[GazzaG60]

but the plug and play vems.

id get an WB02 probe and and egt probe. opt for the bigger of the 2 probes think it was 7mm.

thats about it. change the polarity on secondary VR and away you go.

i use no boost control with it cos of the E-boost2. i expectr you will be the same. works well. i also have the wb02/egt gauge from vems. that lives in the vent pod. i have a defi boost gauge and the eboost in a perrin racing steering column pod.

hope that helps

[A80Avant]

Yes, Gazza got it all basically.
If you want to play around with the ISV valve to control the idle, you will need the diode OR you can get it from Marc directly ready to go on there.

Ask for the 16x14 tables to be sent to you(the VEMS firmware) because it is much more efficient to control it that way. easier with the 12x12,but more efficient with the larger tables.

[a4kquattro]

So need a bit of help here from the VEMS users.

If i buy this from Vems http://shop.vems.hu/catalog/product_...roducts_id=122

Is that all I need to get going?

Also I have a 3b but it is converted to AAN ECU with 034motorsport multi coils. So all sensors are 3B.

So I would buy the Vems for AAN right?

if you are currently running an AAN ecu then you would buy the AAN configuration VEMS.

[Jonas_R]

but the plug and play vems.

id get an WB02 probe and and egt probe. opt for the bigger of the 2 probes think it was 7mm.

thats about it. change the polarity on secondary VR and away you go.

i use no boost control with it cos of the E-boost2. i expectr you will be the same. works well. i also have the wb02/egt gauge from vems. that lives in the vent pod. i have a defi boost gauge and the eboost in a perrin racing steering column pod.

hope that helps

I already have Zeitronix installed with egt probe and Wideband sensor. I assume I could use this instead of buying a new one?

Yeah plan was to use the eboost2 as boost controller.

[Jonas_R]

Yes, Gazza got it all basically.
If you want to play around with the ISV valve to control the idle, you will need the diode OR you can get it from Marc directly ready to go on there.

Ask for the 16x14 tables to be sent to you(the VEMS firmware) because it is much more efficient to control it that way. easier with the 12x12,but more efficient with the larger tables.

Who is Marc?

Ok will remember the to ask for the large tables.

[A80Avant]

he just wrote to you above a4kquattro

[Jonas_R]

Doh

[GazzaG60]

the larger tables help but really ar enot essential. dont get worried that you need 16x14 as you dont and its an easy conversion up if necessary.

[dkw_dude]

I'm (still) thinking about going VEMS also (have a 3B), and have a q. The link in post #1 says something about manifold air temperature sensor:

"The audi factory MAT (manifold air temperature)-sensor is PTC type, so 430 Ohm pullup resistor is used for better precision. If you replace MAT sensor with an NTC-type sensor, write "weak (2k7) MAT pullup for NTC MAT".

How bad is the precision on the standard MAT sensor (XX deg. Celcius off @YY degrees MAT), is it advisable to go for the ntc type sensor?

[ranz]

And can someone tell me how is EGT sensor connected to AAN VEMS ECU? independent cable from ECU?

[A80Avant]

yes

[Rocco]

sorry for the small offtopic and a noob question,but...

wich are the advantages of the Vems ECU if change it againts my upgraded chiped 3B ECU?? it has the posibility of change and mod some turbo/ignition parameters?? , I am not a chiptuner and then it will be dangerous to managed it true?'

[a4kquattro]

I'm (still) thinking about going VEMS also (have a 3B), and have a q. The link in post #1 says something about manifold air temperature sensor:

"The audi factory MAT (manifold air temperature)-sensor is PTC type, so 430 Ohm pullup resistor is used for better precision. If you replace MAT sensor with an NTC-type sensor, write "weak (2k7) MAT pullup for NTC MAT".

How bad is the precision on the standard MAT sensor (XX deg. Celcius off @YY degrees MAT), is it advisable to go for the ntc type sensor?

the stock (PTC) air temp sensor's reading is somewhat 'aliased', meaning that it will jump in increments of about 8C. The 1.8t style sensor is smoother and more linear, I generally recommend going with the NTC sensor for applications over 400hp.

[a4kquattro]

sorry for the small offtopic and a noob question,but...

wich are the advantages of the Vems ECU if change it againts my upgraded chiped 3B ECU?? it has the posibility of change and mod some turbo/ignition parameters?? , I am not a chiptuner and then it will be dangerous to managed it true?'

advantages over motronic are:

1) ability to change maps at will. This is important if you intend on mixing and matching parts (turbo, injectors, etc)
2) removal of the MAF = improved breathing
3) onboard wideband support for better fuel control both on-boost and off.
4) onboard egt
5) launch control