MonkeyKing
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« on: August 15, 2013, 07:32:46 AM »
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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!
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userpike
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« Reply #1 on: August 15, 2013, 07:44:13 AM »
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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) |
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MonkeyKing
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« Reply #2 on: August 15, 2013, 12:01:51 PM »
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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.
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ddillenger
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« Reply #3 on: August 15, 2013, 12:16:56 PM »
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How did you come up with those figures? MAF underscaled?
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julex
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« Reply #4 on: August 15, 2013, 12:32:36 PM »
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To get rid of CEL, if you have no other issues, just rise the RLSALULL to something above the normal idle load...
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MonkeyKing
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« Reply #5 on: August 15, 2013, 12:48:30 PM »
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How did you come up with those figures? MAF underscaled?
I think my TVUB values are stock. KRKTE is adjusted for the EV14's... I thought that was a typical value for 550cc |
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ddillenger
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« Reply #6 on: August 15, 2013, 12:54:25 PM »
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I think my TVUB values are stock.
And THIS is why your car runs like shit. Fix TVUB, then dial KRKTE in (it will very likely be off after). |
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MonkeyKing
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« Reply #7 on: August 15, 2013, 01:02:35 PM »
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To get rid of CEL, if you have no other issues, just rise the RLSALULL to something above the normal idle load...
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? |
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julex
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« Reply #8 on: August 15, 2013, 01:03:17 PM »
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I second that. 52lb ev14 are butter smooth, hell, I have 1000cc ev14s and they still idle like butter!
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MonkeyKing
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« Reply #9 on: August 15, 2013, 01:11:10 PM »
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Do I adjust TVUB just based on block 32? Any tips on how to adjust?
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ddillenger
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« Reply #10 on: August 15, 2013, 01:44:48 PM »
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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.
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ddillenger
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« Reply #12 on: August 15, 2013, 02:25:12 PM »
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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.
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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MonkeyKing
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« Reply #13 on: August 16, 2013, 06:46:31 AM »
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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
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ddillenger
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« Reply #14 on: August 16, 2013, 10:38:11 AM »
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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.
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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