NefMoto

I'm currently using the stock KFMRES map and get a few idle misfires with 52lb EV14's.  I want to try increasing KFMRES... how much should I increase?

Or... should I increase the idle misfire recognition (RLSALULL)?

Thanks!

what are your KRKTE and TVUB values? What do your trims look like?(block 32)

KRKTE is 0.06749
TVUB is 2.000, 1.008, 0.800, 0.704, 0.608

Fuel trims looked okay last time I checked... I'll look again later today.

My car has always had some idle misfires with different tunes but it doesn't affect performance at all.  I don't think it's actually a tune issue, but I just want to get rid of the CEL coming up if I idle too long.

How did you come up with those figures? MAF underscaled?

To get rid of CEL, if you have no other issues, just rise the RLSALULL to something above the normal idle load...

I think my TVUB values are stock.  KRKTE is adjusted for the EV14's... I thought that was a typical value for 550cc

And THIS is why your car runs like shit. Fix TVUB, then dial KRKTE in (it will very likely be off after).

Thanks, I'll most likely just do this.  But when I change RLSALULL, it does not change the value in RLSALUN... do I have to change it in RLSAUN also?

I second that. 52lb ev14 are butter smooth, hell, I have 1000cc ev14s and they still idle like butter!

Do I adjust TVUB just based on block 32?  Any tips on how to adjust?

Read the EV14 injector migration thread, Julex posted an updated spec sheet. Taking your TVUB right from there should cure 99 percent of your idle woes.

Thanks!  Is this the datasheet you're talking about: http://www.boschdealer.com/specsheets/550cc.pdf

How do I know what my fuel pressure is?  I have stock fpr and 044 in-tank pump.

Yes, that's the sheet. I can't comment on your pressure as you neglected to tell me what car you have. If it's a 1.8 it could be either 3 or 4 bar. Look at the FPR, then google the part number. That'll tell you.

1bar=14.7psi.

Thanks again.  It's a 2.7T S4, so 4 bar or about 60 psi.

I checked block 32 last night and it doesn't seem too bad.  Should I still adjust TVUB?  When adjusting TVUB, do you multiply the whole vector by a percent increase?  Also, my car occasionally goes into a low boost limp mode during WOT in 1st and 2nd gear, then gets full boost again in 3rd... could this be related to my low TVUB values?

idle B1S1   part B1S1   idle B2S1   part B2S1
  3.0           1.6             2.4           -0.8     <--- right after startup
  2.8           0.0             2.4,          -1.6     <--- after a 30 minute drive

Your trims are decent because KRKTE is higher, TVUB is lower. They're balancing each other out.

If you want a smooth idle, fix TVUB. You will likely have to lower KRKTE as well, I'd start with .059xx.

so raising the RLSALULL from 15.750 to like 22.500 will stop misfire detection at idle?

this depends *entirely* on the root cause of the misfire which you absolutely should diagnose instead of coding it out.