bchappy

I filled up with E85 yesterday and immediately flash in my scaling and base maps for the new fuel. I got the following trims after driving about 60-70 miles.
STFT +-2
Mid trim was -7

In the evening I went to tune the car and I get a CEL, I pull the code and get P0441 which I have got before, so right before I tune the car I check the gas cap and like a dumb *** go about clearing the code by taking the positive battery cable off its post.
Thus resetting the trims.
I start the car and let it idle to make sure all is well, then go about to do a 3rd gear pull. As soon as I roll into it it bucks and stutters while coming into boost, I look over logs and AFRs where I want them.
So I do another roll on.... same thing.
I am looking for verification if this is solved by letting the trims reset.
If so, if all was working nicely prior to reseting the ECU then all should be fine once the trims stabilize?
What is the fastest way to do this? A steady highway cruise for an hour?
Thank you for any input.

todd6027

iTrader: (10)

check plug gaps

bchappy

there at .022 so there fine bump

PeteyTurbo

iTrader: (9)

where do you want your afr's??

bchappy

I was more along the lines wondering if the "fuel-cut" like symptoms are normal if the trims are not stabilized.
It doesn't seem many people are having issues like mine.
The car ran fine until I pulled the battery cable prior to my attempt to tune the car.
I would like the AFRs when tuned around 11.8 (gas calibrated).
Anytime I pass into boost(tip in 7-9PSI approx 40% throttle) however the AFRs go pig rich and hunt.
Just trying to hunt down what I need to do to remedy this.
Thank you for anyones input.
alright just checked
STFT are everywhere.... +8 at times varying to -7
mid trims are -12.7
any input?
what should i do to bring these in check?
*injectors are FIC 1050s

THUB

iTrader: (5)

Nevermind. Misread the first post.

bchappy

to counter mid trims I added 12% more to the scaling and went for a 30 minute drive.
mid is now -9% and the low is -10%
STFT is just about everywhere; +-7 at times.
so just about what it was.
thought that maybe the E85 pump really didnt give me E85 but it wouldnt explain how it ran damn near perfect yesterday after the fill up with Mrfreds 731 scaling and his latencies.
scaling is now 812 on E85 and still pulling fuel.

PeteyTurbo

iTrader: (9)

Decrease latency and global scaling (higher number)...E85 will want to blow out spark if it is run somewhat rich at high boost..How many tanks of E85 have you ran through the car? Tune for a solid 12.0afr (safe side) and you should be golden man..

bchappy

half a tank of E85, it took 13.75 gallons of e85, so we can call it E80.
I am just puzzled that I am at a 812 global right now and it is still pulling fuel.
And you suggest bumping the latencies up as well?

PeteyTurbo

iTrader: (9)

Yes latencies will get your ltft low in check and use the global scaling to get your ltft mid in check..But they both work together to an extent.

tnt1106

3.192
1.992
2.088
1.128
0.816
0.408
0.12

650 scaling

fic 1050's on e85. almost spot on 0 / 0 trims

bchappy

now I am flat *** puzzled, added 8% latency 11v-18v and boy was that the wrong Idea
STFT maxed at -25 and LTFTs went to ****s
well at least I am getting humored now with this.
^I appreciate your settings and am going to try them right now.

oldevodude

iTrader: (3)

Well if you added latency you add fuel.. bigger number at 14v for example adds fuel if your trim was -8 then if anything you would need to lower latency value and OR increase your injector sizing If both stft mtft are about the same then it's your global bigger number on global pulls fuel do one change at a time and see what happens to your trims and you will quickly learn how the changes affect your fueling.

bchappy

^ thank you for clarification.
Its surprising when things get off just the littlest bit the car throws a ton of fuel, but little discrepancies with big injectors=big changes.
It seems like the spark is blowing out with this much fuel being injected as stated before by petey.
I thought it could be a boost leak but you can feel the spark going away with tip in and complete cut out under further throttle.
I am going to check the plug gap even though I just put in new plugs a week ago and gapped them at a E85 friendly .022.

oldevodude

iTrader: (3)

No problem and you are welcome.
Good Luck