VEMS and Ford light green injectors roughly at idle

[Jamo]

Hy,

so i checked the plugs, 4x looks o.k. , 1x wet...

Checked the injectors, flow test them, and now..

1. 4ml
2. 4ml
3. 5,5ml
4. 0,5ml
5. 6,5ml
...after 10sec. duration....

Test the RS2:

1. 3,2ml
2. 3,4ml
3. 3,4ml
4. 3,4ml
5. 3,4ml

That's o.k.


The fu...ing Ford injectors are so bad, i will throw then away.

What injectors are flowtested with min. tolerance and run nicely with VEMS ?

Thomas

Use the Siemens injectors Gazza stated earlier in the the thread.

[A80Avant]

ego off below 1100 may not be able to be sufficient for emissions, as lamda will not always be proper depending on outside temperatures. A VE figure is not able to cope with all variatons. I had to put it back on EGO, even though the VE bin is very close to lamda=1 as i have for idle

[Jamo]

For MOT I'll change it to 700

[A80Avant]

initially i had it as you did, as i thought it was more stable, but eventually i noticed that i was eating more fuel, as sometimes it would go to 0.95 and other times it would go to 1.06 and eventually the idle became rough again. Now ego is on and actualy during warm up enrichment, as soon as it comes on, it is even more stable(the idle that is)

[GazzaG60]

too lean at idle will send nox through the roof.

fitting a new cat before the test will get most through.

[Jamo]

initially i had it as you did, as i thought it was more stable, but eventually i noticed that i was eating more fuel, as sometimes it would go to 0.95 and other times it would go to 1.06 and eventually the idle became rough again. Now ego is on and actualy during warm up enrichment, as soon as it comes on, it is even more stable(the idle that is)

Hmm that's food for thought I'll have to look at ego settings then I found it slow to react however when the new injectors arrive next week I'll re-enable ego at idle

[A80Avant]

well i have no idea how 1.1.6x versions behave in changes and reactions.I read a lot, but havent tried them myself. but ego is relatively fast on 1.1.27 now and im happy with it.

i have to mot the car in march, so im hoping it will pass. I know Billman's did on vems without issues and 150K kms old rs2 cats

[Jamo]

It's because I'm using the 1.1.6x settings not the 1.1.27

1.1.6x says PID should be 30 or higher, mine is set to 64 where as in 1.1.27 it's set to 4 will test that later

[A80Avant]

what part of PID? the P,I or D?

[Jamo]

what part of PID? the P,I or D?

Speed limit ( or PID kp ) is box name under EGO closed loop control settings

[Bram]

EGO control for idle and cruising works great on 1.1.27b6

[A80Avant]

mine is 28. Tried various other settings,but it is reacting ok there.

i have noticed that others think that ego in 1.1.6x is not as fast.

The problem with all those changes, is the fact that the developers are doing them, without issueing a simple or complicated(i dont mind) manual which states how each setting with its value affects running. Megamanual was there to explain all that, but the VEMS guys are not simply adding things, they also change old settings that seemed to work nicely.
I believe that in many cases that may have been unavoidable, BUT, if you have to do it, then give explanations of how it is now managed. Trying to set values blindly or providing a base map is not the answer. Trial and error will be unavoidable, but at least we have an idea of what an increase or a decrease in a value does to the engine running, rather than expecting to listen to the engine.
Many of those settings may only appear in certain circomstances so changing them may not make a difference on idle, but may affect running, etc.

The whole idea behinds vems was ( i think) NOT having to rely necesseraly on a tuner to make all the changes. Now, even VEMS retailers are not sure what each new feature should be having as values.

[Jamo]

Yes they have 2-4 developers working on firmwares at a minimum now and a lot of features they've had planned are being thrown into the mix.

To me it's like George's Marvellous Medicine by Rohl Dahl, hopefully they'll find the right mix soon

[th.b.w.]

Hy,

so as i changed the injectors to RS2, now i have an stabile idle, AFR is turning from 0.97 to 1.01, thats great.

I can become the Siemens DEKA 550ccm or the 750ccm with Flowprotocol, they have an tolerance from 0.1ml in a set of 5....
I will try it with the smaler 550er because i think the 750er are to big.....

Have anyone use them ?
They looks like the same as the 630er...

Thomas

[A80Avant]

if you are going to go for even bigger turbo later, i would suggest to go for the 630. that way you wont have many adjustments to make when redoing the VEMS maps,like i have to do now by changing from 440 to 630.