NefMoto > Technical > Tuning > Bosch 980cc running too rich
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Author Topic: Bosch 980cc running too rich  (Read 15589 times)
igo300
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« Reply #15 on: November 13, 2015, 11:57:11 AM »
Quote from: Mocke on November 13, 2015, 11:41:27 AM
I dont know if this will sort your problem, but this works for my car. I belive you got some other issues. Send a log or your file if you want.

TVUB @ 4bar
7.04    2.800
10.07  1.800
12.04  1.299
14.08   1.000
17.88   0.699

What are your KRKTE TEMIN TEMINVA
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Lost
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« Reply #16 on: November 13, 2015, 12:16:37 PM »
Krkte is 0.0445... This is as said E85
The rest does not matter. It is not your problem.
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nyet
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« Reply #17 on: November 13, 2015, 12:39:30 PM »
there is something wrong with the hardware, imo.

fpr bad? leaky injectors? bad maf? bad o2? intake leak?
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igo300
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« Reply #18 on: November 13, 2015, 09:00:09 PM »
Quote from: Mocke on November 13, 2015, 11:41:27 AM
I dont know if this will sort your problem, but this works for my car. I belive you got some other issues. Send a log or your file if you want.

TVUB @ 4bar
7.04    2.800
10.07  1.800
12.04  1.299
14.08   1.000
17.88   0.699


I swapped the base file and ran your TVUB (as above) with
KRKTE 0.029193
TEMIN 0.2187 
TEMINVA 2.18

Just driven 200km - absolutely fantastic - trims within 1%

No misfires at idle and absolutely smooth.

The Bosch spec sheet was certainly a long way out.

Thanks to Nye and Daz and an extra thanks to Mocke as your numbers are spot on.
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Lost
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« Reply #19 on: November 14, 2015, 01:46:43 AM »
Cheers mate.
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ddillenger
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« Reply #20 on: November 14, 2015, 01:49:50 AM »
Quote from: Mocke on November 14, 2015, 01:46:43 AM
Cheers mate.

The values I posted are right from the latency sheet I got from deatschwerks. I had two injectors done, but were identical. Interesting that yours and his were so far off.
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igo300
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« Reply #21 on: November 14, 2015, 02:00:44 AM »
Agreed.
What was also weird is that once I swapped the map I was getting 12% rich on my numbers and 7% lean on yours. Mockes were between the two so I went with them. Had I not I'd still be looking to KRKTE to try and solve it.
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nyet
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« Reply #22 on: November 14, 2015, 02:04:31 AM »
In general, use krkte to adjust partial trims, tvub to adjust idle trims.
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! 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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« Reply #23 on: November 14, 2015, 12:06:22 PM »
Mine injectors  came with the spec that was way off as well. Was really wrong on two cars i have seen.
Numbers i got that work  was done by trial an error.
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ddillenger
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« Reply #24 on: November 14, 2015, 12:21:25 PM »
Quote from: Mocke on November 14, 2015, 12:06:22 PM
Mine injectors  came with the spec that was way off as well. Was really wrong on two cars i have seen.
Numbers i got that work  was done by trial an error.


Well, Yes, but I am saying I bought injectors, and had them tested myself. These were observed latencies, not just spec sheet numbers. That's why I find it odd.

I'm thinking compounded error, but who knows. Good work!
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igo300
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« Reply #25 on: November 14, 2015, 12:25:43 PM »
Quote from: nyet on November 14, 2015, 02:04:31 AM
In general, use krkte to adjust partial trims, tvub to adjust idle trims.
The variations of -12 an +7 I mentioned were partial trims and I would normally have kept adjusting KRKTE and TEMIN, which I was doing, with no result.
In this instance TVUB was the primary problem.
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Karim
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« Reply #26 on: November 07, 2023, 04:07:38 PM »
Help please, how can i calculate tvub at 3 bar? I use this injectors..
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aef
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« Reply #27 on: November 08, 2023, 02:25:57 AM »
http://nefariousmotorsports.com/forum/index.php?topic=12470.msg139968#msg139968
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