NefMoto > Technical > Tuning > Max MAF value MED9.1 TFSI
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Author Topic: Max MAF value MED9.1 TFSI  (Read 15258 times)
turbojohan
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« Reply #15 on: August 19, 2016, 10:20:23 AM »
ok thank you for this info.
These injectors work quite well.
I had RS4 before and smoke a lot never get it completly right.

i added a bit of fuel duration with FKKVS.
If not fuel stops at 6,88 ms MAFless.
Runs quite ok now.
Ran 10.6 sec 1/4 mile last race, hope to make really low 10 next race.
Does anyone know what is quickest full FSI FWD in the world?

Johan
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q_dubz
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« Reply #16 on: August 20, 2016, 04:19:27 PM »
364g/s is only where VCDS maxes at, it won't display higher which is stupid. The MAF is still reading. My MAF maxed according to ME7 logger at 502.3g/s
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gman86
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« Reply #17 on: August 20, 2016, 04:38:11 PM »
Quote from: q_dubz on August 20, 2016, 04:19:27 PM
364g/s is only where VCDS maxes at, it won't display higher which is stupid. The MAF is still reading. My MAF maxed according to ME7 logger at 502.3g/s

The measuring block is limited by the ECU routine that injects that value onto the CAN bus. Without custom ASM code, you'll not see more than the measuring block can report.
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vwaudiguy
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« Reply #18 on: August 20, 2016, 04:58:09 PM »
Quote from: q_dubz on August 20, 2016, 04:19:27 PM
364g/s is only where VCDS maxes at, it won't display higher which is stupid. The MAF is still reading. My MAF maxed according to ME7 logger at 502.3g/s

Also, how did you get ME7L to work with MED9?
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
turbojohan
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« Reply #19 on: August 22, 2016, 03:00:08 AM »
Quote from: q_dubz on August 20, 2016, 04:19:27 PM
364g/s is only where VCDS maxes at, it won't display higher which is stupid. The MAF is still reading. My MAF maxed according to ME7 logger at 502.3g/s

When fuel amount doesn't change from 364 g/s i don't think it is a diagnostic limit.
I don't believe that VCDS gives lower value as ME7L.
Or it reads different channel but than VCDS can also read that channel.
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vwaudiguy
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« Reply #20 on: August 22, 2016, 09:22:08 AM »
What software are you using to log this engine?
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nubcake
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« Reply #21 on: August 22, 2016, 10:13:50 AM »
Quote from: turbojohan on August 22, 2016, 03:00:08 AM
When fuel amount doesn't change from 364 g/s i don't think it is a diagnostic limit.
I don't believe that VCDS gives lower value as ME7L.
Or it reads different channel but than VCDS can also read that channel.

Surprise! ME7L does not read "diagnostic channels", it reads ram values directly. So yes, it is better. And it can't be directly compared to VCDS. Bottom line - it indeed could be other problem than "MAF maxing out".
« Last Edit: August 22, 2016, 10:20:47 AM by nubcake » Logged
turbojohan
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« Reply #22 on: August 22, 2016, 12:11:02 PM »
Ok, i didn't know. Than it is better.
I thought i always gives ID bit for what it is, than how big steps are than actual value over diag and that it would be same for all diagnostic reading tools..
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nokiafix
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« Reply #23 on: September 01, 2016, 12:00:44 PM »
Dont forget KLTIKRPR.

What rail pressure are you tuning and how are you using the inlet cam for tuning,  the inlet cam also plays a huge part on the injection window and the cylinder pressure.
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