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Author Topic: s4 maf problem?  (Read 38780 times)
adam-
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« Reply #45 on: October 19, 2015, 12:06:50 AM »

I recommend getting a MAF before trying to tune.
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ddillenger
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« Reply #46 on: October 19, 2015, 09:33:27 AM »

I HAVE BOOST!!! LIFE WITH BOOST!!
After hours and hours I started from square one, I just added a huge turbo to the car! so boost isn't going to come on till 4000 rpms so throttle plate angle might be out of wack and pids are going crazy. So I played with a couple maps and sadly I had to change a safety map. So now it's time to learn these maps and get the full meaning behind them.

KFVPDKLD-Max pressure ratio (throttle plate) for ldra diagnosis - Max. zulässiges Druckverhältnis DK für ldra Diagnose
KFMSNWDK-Map for scaled mass flow over throttle valve
KFWDKMSN Map for target throttle angle

I am going to have to ban you from this site. You just refuse to do things the right way, and I don't need anyone else following in your footsteps. Please, next time you post anything I want a full explanation of what you changed, WHY you changed it, and how it impacted the vehicle. Failing to do this will result in disciplinary action.
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nyet
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« Reply #47 on: October 19, 2015, 10:21:34 AM »

I recommend getting a MAF before trying to tune.

Or even posting DTCs when completely baffled why your motor wont run, instead of screaming how the sky is falling and there is some strange mysterious force at work.
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k0mpresd
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« Reply #48 on: October 19, 2015, 10:36:11 AM »

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ktm733
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« Reply #49 on: October 19, 2015, 10:58:01 AM »

Okay can you delete this topic and I'll start from scratch and post logs for everybody. Do you want me to post values that i changed them to?
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nyet
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« Reply #50 on: October 19, 2015, 10:59:32 AM »

More importantly, don't bother posting anything until you have no DTCs.
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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

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 ex
ktm733
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« Reply #51 on: October 19, 2015, 11:18:46 AM »

I won't, my maf has come in.
Maf= sensor and housing from a s4 2.7t not v8 4.2l. Will this be fine?
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ddillenger
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« Reply #52 on: October 19, 2015, 12:02:58 PM »

I won't, my maf has come in.
Maf= sensor and housing from a s4 2.7t not v8 4.2l. Will this be fine?

That maf is good to approximately 320g/s. You tell us, do you expect to push more than 320g/s (300hp) through your engine?
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SB_GLI
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« Reply #53 on: October 19, 2015, 12:16:29 PM »

That maf is good to approximately 320g/s. You tell us, do you expect to push more than 320g/s (300hp) through your engine?

Isn't 320g/s closer to 400hp at the crank?  g/s * 1.2 ~= hp
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ktm733
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« Reply #54 on: October 19, 2015, 01:33:42 PM »

Isn't 320g/s closer to 400hp at the crank?  g/s * 1.2 ~= hp
That's what thought? So which one of you are correct?
Or could I just put s4 sensor into the 2.7t housing? I'm scared to do that as I have never scaled a maf. I know there is a tool floating around here.
So put 4.2l sensor in the 2.7t housing work?
I heard stories of a maf sensor scaled wrong could be a bad.
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nyet
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« Reply #55 on: October 19, 2015, 01:35:23 PM »

I heard stories of a maf sensor scaled wrong could be a bad.

If you can't select a proper maf and scale it correctly...
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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

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 ex
ddillenger
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« Reply #56 on: October 19, 2015, 04:26:27 PM »

Isn't 320g/s closer to 400hp at the crank?  g/s * 1.2 ~= hp

When I speak hp, I speak wheel hp. The only measurable medium.
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ktm733
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« Reply #57 on: October 30, 2015, 05:25:23 PM »

well progress has come to a quick stop for a bit
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ddillenger
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« Reply #58 on: October 30, 2015, 05:27:03 PM »

what did you hit?
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ktm733
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« Reply #59 on: October 30, 2015, 05:45:00 PM »

A dirt wall! Nobody was harmed, just bruised from seat belt but hey I'm alive!
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