andrew

Hi,

I just used travisb's fuel table smoothing calculator. Its great. I noticed that when I run auto tune it keeps adding fuel in in the lowest kpa cells when the engine revs are falling (like slowing down slowly) or when changing gear.

I presume I am missing something in my settings as the car drives great, hits its my target AFR's all the time. I just dont know why the engine wants big fuel table no.s when there is no load. Table attached. I have lowered these no.s manually but autotune will look for no.s around 100.

Any suggestions?

Braineack

iTrader: (62)

i cant imagine it drives great with that fuel table. just imagine how great it will feel when you actually fix your issue of that horrid table...

hustler

iTrader: (6)

Those cells are hard to tune without a dyno. Put the car in 2nd and roll around at 50mph and tune them manually. VEAL has a hard time understanding what to do when transitioning to over-run.

Braineack

iTrader: (62)

things i noticed:

you have 265cc injectors but a req_fuel for 600-800cc injectors.
youre using include AFRtarget
your ignition table is very retarded

andrew

I need to update my sig, I have 550cc EV14 in now.
My VE values are lower in other areas with same AFRtarget, how is this a problem?
I had the spark table tuned by a tuner on a dyno. He said it was knocking and I asked him to set it conservative. I could be wrong, but I thought the spark map is all relative to the ignition offset angle set in the trigger wizard.

andrew

I have manually smoothed the table but it feels the same to drive. This is the fuel table autotune has given me through 5 hours + of tuning and manual smoothing going from easy to very hard. I presume its a bit lumpy in the mid revs/load due to the change in target AFR. The very low revs high kpa areas are not tuned as the car never goes there. I have to say I trust what autotune is giving me, the VE numbers it suggests give me the AFR ratios I want. Its also not tuned above 155 kpa

Oni

iTrader: (1)

WUE numers also dont have a 100% value, i beleive this means u will always be in WUE with the last value u have (106%). Can someone smart confirm this please .

Zaphod

That in my understanding is not a bad thing to do (as I said before) - you can change the AFR target table without big changes to the VEtable (because the AFR is included in the fueling calculation.

Braineack

iTrader: (62)

sure, but do it AFTER you tune the VE table.

Zaphod

then you will have to retune the VEtable again, afaik..

andrew

I brought the WUE down from 106 to 100%. This messed up the fuel table big time. I started the autotune it again, but it was miles off and autotune didn't seem to make changes to the fuel table, so I reverted back to the old tune as I am happy with it.