VEMS and Ford light green injectors roughly 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]

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

[GazzaG60]

too lean at idle will send nox through the roof.

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

[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)

[Jamo]

For MOT I'll change it to 700

[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]

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.

[Jamo]

Hy, req_fuel is set on 2.8 now.

I have told to Peter Nanassy and he say that the VE Table should go better from about 100 - 230, so i have change to this req_fuel setting and the table goes from 106 - 220....
It runns better, but not so smooth as with RS2 injectors...

I wonder why the idle stay sometimes at 1000, othertimes on 1100 and AFR stay from 0,90 to 1,10?

1. I will change the spark plugs.
2. change the ISV
3. check the ign. at idle with strobo.light , it is set to 11°

Im wondering about the setting trigger tooth after TDC is set to 58°, in the mechanic guide it is by 62 ° is this right ?


My hardware:
S2 3b, VEMS 1.1.64, single coils from Marc, GT3071 AR/82, Wagner short IM, Wagner ExM K26 machined,
XXL LLK, light green Injectors with 3bar FPR, ported head, supertech valves oversized, ported valve sits, Bosch 044 fuelpump, and and and


Thomas

Exactly the same issue I had in 1.1.65, the issue is the ISV needs to be enabled. Ignition only idle sucks big time with the high idle the only way to get the revs to drop is to open the ISV a small percentage on the map

Once you've done this idle drops and is a lot better

Also disable ego below 1100 rpm it will make idle a lot better

[th.b.w.]

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

[A80Avant]

ok, so if you are only using ignition timing for your idle, and it still takes the lamda from 0.90 to 1.10, with ego off, im not sure whats going on. It could be a firmware glitch or one of the settings is on, messing up your lamdas. It shouldnt oscillate with a stable VE value. All i can think of is lamda PID settings, but even that should be already set and it shouldnt matter when EGO is off.

[th.b.w.]

Hy,

i run without the ego correction till i have finished the VE table...

Peter say the diode was inside the VEMS on stock..... ?

I run only with ign. idle, when i turn on the ISV idle it turns from about 900 - 1100

Thomas

[A80Avant]

check the timing with a strobe light. Slight differences are always there, and dont trust a paper. Mine was checked and the correct was 57deg.

if you dont have a diode for the ISV, then you shouldnt be using it. it could be the reason why your idle lamda is all over the place.
Turn the IAC off, set a good ign.timing idle so that the VE is where your lamda asks it (do that with ego OFF) and then turn ego ON again.

if by turning EGO on, it fluctuates around the desired lamda value you have set, then your EGO corrections are wrong.

If it sits nicely on the value, then your IAC control needs tweaking.

keep trying!

[th.b.w.]

Hy, req_fuel is set on 2.8 now.

I have told to Peter Nanassy and he say that the VE Table should go better from about 100 - 230, so i have change to this req_fuel setting and the table goes from 106 - 220....
It runns better, but not so smooth as with RS2 injectors...

I wonder why the idle stay sometimes at 1000, othertimes on 1100 and AFR stay from 0,90 to 1,10?

1. I will change the spark plugs.
2. change the ISV
3. check the ign. at idle with strobo.light , it is set to 11°

Im wondering about the setting trigger tooth after TDC is set to 58°, in the mechanic guide it is by 62 ° is this right ?


My hardware:
S2 3b, VEMS 1.1.64, single coils from Marc, GT3071 AR/82, Wagner short IM, Wagner ExM K26 machined,
XXL LLK, light green Injectors with 3bar FPR, ported head, supertech valves oversized, ported valve sits, Bosch 044 fuelpump, and and and


Thomas

[Rocco]

around 400hp id expect.

id just fit an 044 and some dekka 630cc to avoid going over 80% DC

and then ,may can´t use my new Hybrid k26/27..because my 3B to RS2 specs software are some "agresive" and the hybrid boosting 1,8bar surelly must gives more than 400hp true??

i will confirm that with the wideband gauge....if not i will have to install again the original k24 7200

thanks for answer Gazza ,and sorry for the small off topic Thomas

[A80Avant]

the ford light greens are 440cc.I have been using them since my engine rebuild and its definitelly their potential. That does not mean that they can flow more. On flow testing, mine did actually go up to 467cc @ 3bar. Manufacturer says 440 though