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Old 04-08-2014, 10:55 PM   #1
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Default How is this engine even running??

So I finally got my idle issues sorted out (I think, I mean it idles ok) but after making a short run down the street (3- mi.) my fuel map looks..wrong. AFR was reading super high until veal started sorting things out. What could I have f-ed up so badly that I ended up here?
* engine is more or less stock, no turbo, stock injectors.
- why does auto tune seem to stop making ajdustments @ 5k?
req. fuel is 11.4.How is this engine even running??-screenshot-8-.jpgCurrentTune.msq
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Old 04-08-2014, 11:43 PM   #2
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Where did your base map come from? Id say it would be worth while to find a good base starting map. I started with the one right from DIY auto tune then did Autotune and manual adjustments from there.

Autotune has parameters under the Advanced tab which prevent it from changing the map too drastically or potentially limiting tuning around certain RPM or KPa. Also note how your Tach in the dash relates to auto tune. After reading a lot I've found that the stock tach could be quite off. I don't hit my 7k limiter till about 8.2k on the stock tach. This could explain why it "stops" at 5.5k
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Old 04-08-2014, 11:47 PM   #3
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Where did your base map come from?
a random number generator apparently
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Old 04-08-2014, 11:48 PM   #4
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It started as a base map from diy but I changed a lot on the maps. For instance, the base map lists the kpa range to 230. I am NA so I changed it to 105. I'm not too concerned with the tach. It seems to be fine. What I am concerned with is the 250 + fuel numbers.
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Old 04-08-2014, 11:51 PM   #5
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So are those 255 numbers coming in after you ran VEautotune? You said your AFR read very high, Id assume you mean lean and that its putting those cells to 255?

What Wideband are you running and how do you have it calibrated in Tunerstudio?
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Old 04-08-2014, 11:52 PM   #6
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a random number generator apparently
Somewhat.All of the members I had were similar to maps I found others using. Then auto tune took over and this is what I have now.
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Old 04-08-2014, 11:55 PM   #7
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So are those 255 numbers coming in after you ran VEautotune? You said your AFR read very high, Id assume you mean lean and that its putting those cells to 255?

What Wideband are you running and how do you have it calibrated in Tunerstudio?
Yes, after auto tune. I have a lc1. Numbers seamed normal when I was on the stock ecu. 11 under load, 15 cruise.
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Old 04-08-2014, 11:57 PM   #8
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something is miscalibrated or not communicating. if that fuel map was correct you'd be flowing fuel out the exhaust

literally
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Old 04-08-2014, 11:57 PM   #9
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are all 4 injectors connected and working?
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Old 04-08-2014, 11:59 PM   #10
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Agreed. No way to see the wideband calibration from the MSQ but that would be the first place I'd check.
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Old 04-09-2014, 12:00 AM   #11
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Quote:
Originally Posted by 18psi View Post
something is miscalibrated or not communicating. if that fuel map was correct you'd be flowing fuel out the exhaust

literally
I agree.
Injectors- runs great on the stock ecu, so I guess they are working correctly.
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Old 04-09-2014, 12:02 AM   #12
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Agreed. No way to see the wideband calibration from the MSQ but that would be the first place I'd check.
What do you need to see the calibration?
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Old 04-09-2014, 12:08 AM   #13
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When I set up the wideband, I connected to signal wire to the signal wire for the stock narrow 02. In the factory harness. Was this a no no.?
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Old 04-09-2014, 12:08 AM   #14
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What do you need to see the calibration?
I don't think there is a way to without it being plugged into the car but someone else may be able to prove me wrong on that that has more experience.

But I think i found the cause. You warm up enrichment starts at 100% then goes down to 20% once its warmed up. This means its actually cutting 80% of the fuel when its warmed up causing your auto tune to have to pile in the fuel to make up for it. Mine is like a gradual slope down from 170% at -40deg to 100% at 180deg
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Old 04-09-2014, 12:11 AM   #15
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Originally Posted by thommorud View Post
I don't think there is a way to without it being plugged into the car but someone else may be able to prove me wrong on that that has more experience.

But I think i found the cause. You warm up enrichment starts at 100% then goes down to 20% once its warmed up. This means its actually cutting 80% of the fuel when its warmed up causing your auto tune to have to pile in the fuel to make up for it. Mine is like a gradual slope down from 170% at -40deg to 100% at 180deg
This makes sense but if I raise it up to where you said, black smoke fills my neighborhood.
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Old 04-09-2014, 12:15 AM   #16
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I'll try bringing all of the fuel numbers wayyyy down and then fix the warmup and see what happens.
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Old 04-09-2014, 12:16 AM   #17
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Yeah, if you are going to cut the warmup back to where it should be, you are going to have to bring the fuel map back out of the stratosphere. Otherwise it have gas coming out of the exhaust since the warmup is multiplicative.
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Old 04-09-2014, 08:55 AM   #18
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Originally Posted by ryansmoneypit View Post
Then auto tune took over and this is what I have now.
This is the software's way of telling you you fail.
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Old 04-09-2014, 09:01 AM   #19
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Although you are absolutely right, that ^^^ provided zero insight as to why. Did anything in my settings besides the warmup enrichment appear to be horribly wrong?
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Old 04-09-2014, 09:06 AM   #20
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Brain, in one of my other posts regarding the 02 you said that I could be getting an incorrect signal because I was using the factory signal wire in the loom, but you thought I was running the narrow band at the same time. I'm only running the wide band through this wire but is that still incorrect to do?
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