Acceleration Enrichment issues

[Billman]

I wanted to see if other have the same issue i have on the stroker with acceleration enrichment.

I must run silly amounts of fuel in order to have it somehow right and i cant find out what am i doing wrong!

With the 2.2 engine and the lambda in the stock location it was never an issue.



here is a screenshot of the old 1.1.27 setup:

[Jamo]

Once you've upgraded from 1.1.27 those settings are useless, the routines have completely changed since 1.1.6x so you need to remap it from scratch

[Billman]

i know but with 1.1.81 i still believe that it is high:

[Billman]

Anybody?

[dkw_dude]

I'm on 1.1.70, when I set up acc enrichment I found some useful info here http://195.159.109.134/vemsuk/forum/...ic,1108.0.html and also in the link at the end. I managed after a while to tweak the settings so it responds quite good (on my setup anyway). I also have searched the net for generic info accelration enrichment.

Do you have a log, does lean or fatten when you step on the gas?

[A80Avant]

the link does not seem to work

i have a question regarding accel enrichements as well

when it says dot rate vs rpm and gives a %, does that % means the amounf of injected fuel you have already used on the previous table (amount vs pedal press)? say for example if i use 100% on all bins, does that mean that on all rpm that i will use on the 4 bins, i will be getting the total amount i have used on the previous table?

[dkw_dude]

No, and I can't find the thread at the VEMS forum? Maybe it's to late, my brain is shutting down

But it's some info here too, in Mattias' config, link at the end http://195.159.109.134/vemsuk/forum/...ic,1320.0.html

Not sure about your q, cannot find a dot rate vs rpm table.

[A80Avant]

here is the answer. Many thanks to Gunnar on vems forums for that

Billman, now you know what does what, so you can play around accel enrichments

http://195.159.109.134/vemsuk/forum/index.php/topic,1419.0.html

[dkw_dude]

Thanks A80Avant!

[Billman]

So, i am narrowing down the problem a bit. I have noticed that in the sites under 80 Kpa and across the rev range before the turbo starts to pull really i need quite litte VE to have an EGO Corr of 96-97%. But in the contrary at these sites i need a fair amount of enrichment to get it moving further. Thus gives me small accel then "chokes" because it gets too lean. above 80 Kpa there is no issue at all.

Now if i raise the accel enrichment then it gets at the higher sites too rich when i press the pedal.

[A80Avant]

then you need to reduce the rpm vs amount so that after specific rpm your accel enrichment is less

[Billman]

I need all along the rev range under 80-90 kpa more duration on the enrichment than the rest.

[Jamo]

enrichment is throttle based though you cant enrich at 80-90 kpa specifically unless you change to the pressure type system, which no-one has got working in a boosted application

[Billman]

I ve tied that but didn't work. I tried to change the mapping of the table raising the kpa regions a bit so I map derailed at this region and it got better. I am gonna try more tomorrow.

[Billman]

I have made a new map today and got the values that the engine needs under load (small steep road). The acceleration is much better but still need to tweak the values a bit. The problem now is that during cruising at these sites i need a very big EGO Corr value (enleanment) of about 25. To say the truth i dont like it very much.

What should i do? How do you map these regions?