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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > N54 jb4 + dci 93 octane and e85



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      12-03-2012, 09:34 PM   #45
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how much e85 are you running. it's probably a winter blend. I'd give it up. e85 takes patience and it seems you're all jacked up on mountain dew or something. they will spin your arm and fly you to the moon,

just relax.

ethanol is not your forte

try some 100 unleaded or ms109

e85 is my friend but it's ruining your life, just step away from the corn juice until someone can physically walk you thru the logistics of it.
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      12-03-2012, 11:05 PM   #46
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That doesn't look very good. Are you sure you selected G4 N54 settings on the last tab of the interface? Email that log to Terry@burgertuning.com and he will help you.
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      12-04-2012, 12:11 AM   #47
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Is it something bad. I'm going to change to map 1 tomorrow and relearn map 5 lets see any changes. Thanks
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      12-04-2012, 07:08 AM   #48
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Quote:
Originally Posted by gonidz View Post
updated logs with 35% ethanol per spool. No improvement since last time sucks
The log looks fine considering 150 degree intake temperatures up top. If you want more performance up the E85 mixture. I'd also suggest switching over to the G5 ISO board. Better boost control and a better E85 learning algorithm in place.
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      12-04-2012, 07:09 AM   #49
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Terry said go to 50% blend but nothing else and also I should upgrade to g5 board but aren't people using g4 board with e85 and still successful.
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      12-04-2012, 10:42 AM   #50
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re-ran logs after switching to map 1 then back to map5
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      12-04-2012, 10:42 AM   #51
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0-80 log map5
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      12-04-2012, 10:46 AM   #52
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Also getting 29F3 code anything to worry about.
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      12-04-2012, 02:10 PM   #53
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Add more E85 (don't be shy, go for 50) and yes the G5 is a lot better than G4 for E85 use. The 150 degree IATs explains this a lot better.
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      12-04-2012, 03:38 PM   #54
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What does 150 iAT means
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      12-04-2012, 07:37 PM   #55
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Quote:
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What does 150 iAT means
Your intake air is coming in at 150 degrees F. You need an intercooler basically. That being said it isn't the end of the world. Fix the other issues first and get more E85 in there.
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      12-04-2012, 08:06 PM   #56
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K thx I will tomorrow the other thing I am running dci I can go back to stock box if needed.
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      12-04-2012, 08:07 PM   #57
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K thx I will tomorrow the other thing I am running dci I can go back to stock box if needed.
Nah, don't do that.
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      12-04-2012, 08:12 PM   #58
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Quote:
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K thx I will tomorrow the other thing I am running dci I can go back to stock box if needed.
Nah, don't do that.
I'll add 1/4 tank if e85 tomorrow and we will see as I was running about 35% right now. Thx for everyone's help. My car is like a community car lol
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      12-05-2012, 11:51 AM   #59
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Ok guys added 50/50 mix today finally. Fourth wot I went all the way and at went into limp mode at 140 mph. I slowed down in 2 mins everything normal no more mode. Checks codes, had some one from yesterday 29f3 but a new one now 2f71 something to do with ecu fan. Any ideas please. Thx
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      12-05-2012, 11:53 AM   #60
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Car feels stronger overall
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      12-05-2012, 12:45 PM   #61
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Quote:
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Ok guys added 50/50 mix today finally. Fourth wot I went all the way and at went into limp mode at 140 mph. I slowed down in 2 mins everything normal no more mode. Checks codes, had some one from yesterday 29f3 but a new one now 2f71 something to do with ecu fan. Any ideas please. Thx
Log it and get the specific code. One of two things happens at that speed based on what you've said:

1. Trimmed out which means open loop settings will need to be adjusted
2. Your car overheated or obscure fan issue?

I suspect the later based on the light going away after 2 min and the fan code. Also you have very high IATs from what I had seen. What transmission do you have and do you have the stock oil cooler?
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      12-05-2012, 01:21 PM   #62
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i have an automatic and everything is stock except dci. I had jb2 pin out before jb4 and I have had at least 10 runs to max 155 without any issue no limp mode what so ever. Car temp was close to half
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      12-05-2012, 06:57 PM   #63
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updated logs after 50/50 mix let me know any progress please


thx
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      12-05-2012, 07:31 PM   #64
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your AFR on your logs is lean, your running roughly 13.7 AFR. You need to up your Open Loop Fueling from 90 to 100, you're also maxing out fuel trims, adjusting it to 100 should assist. It also doesn't help that you are getting low pressure fuel sensor code, to bad you can't log your LPFP on the G4 board. Your HPFP looks "OK"

Also, your PWM and FFMAX lines follow similar curves, but the FFMAX line is still way below the PWM line, which means you still have a lot to go in regards to auto-tuning. The logs will get better after you do some more WOT runs.

Im avoiding bollingers at all cost, I'm convinced now they are selling crap of E85.
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      12-05-2012, 08:21 PM   #65
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Terry adv to change afr ratio to 0 no idea where to do that and also where do I change fuel trim. Thx just tell me what fields. Thx
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      12-05-2012, 09:07 PM   #66
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I think terry is referring to the all map afr values. I don't think you are too lean tbh. Your trims look "OK" but they are on the edge. You should have enough octane in there now to get better timing than you are. Learning happens at WOT in gears 3 and 4 above 4000 rpm or so. Try a few more pulls there. Keep messing with it, but G5 would benefit you if you keep this up. I am surprised you aren't maxing PWM out. Could be your high IATs.
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