m3.8.3 S3 INJECTORS MAF VR6 SCALED MAPS

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Topic: m3.8.3 S3 INJECTORS MAF VR6 SCALED MAPS (Read 12368 times)

ZpiXDK

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	Re: m3.8.3 S3 INJECTORS MAF VR6 SCALED MAPS « Reply #30 on: October 07, 2021, 03:47:18 AM »

16.32ms injection time is diagnostic limit, it will not log higher, no matter what (:

Anyone can confirm factor for MLHFM?

M3.8.3 AGU - Factor 0,125000, offset -200 - Max 673kg/h

M3.8.1 ABV - Factor 0,125000 - Max 989kg/h


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Gpepes2012

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	Re: m3.8.3 S3 INJECTORS MAF VR6 SCALED MAPS « Reply #31 on: October 07, 2021, 05:26:42 AM »

Quote from: ZpiXDK on October 07, 2021, 03:47:18 AM

Yes 4.98---> 988.63kg/h


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prj

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	Re: m3.8.3 S3 INJECTORS MAF VR6 SCALED MAPS « Reply #32 on: October 07, 2021, 06:46:41 AM »

It's not diagnostic limit, it's scaling limit IIRC in ECU. Or the scaling limit is close to that.


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ZpiXDK

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	Re: m3.8.3 S3 INJECTORS MAF VR6 SCALED MAPS « Reply #33 on: October 09, 2021, 05:45:13 AM »

Quote from: prj on October 07, 2021, 06:46:41 AM

It's not diagnostic limit, it's scaling limit IIRC in ECU. Or the scaling limit is close to that.

Scaling limit?

i know load max at 12,75ms (8bit, 255*0,05 = 12,75), but not sure what you mean with scaling?

Just took it for diagnostic as it will max at 16.32 but it will inject more (:

Throttle angle?
I noticed that my AGU only goes to 82,9% WOT (Using pedal and manuel on the throttle)
-Original throttle axis goes from 77% to 94% so it will interpolate between those columns! (Example: going from 8ms in 77% to 10ms in 94% will land you just under 9ms at WOT - 82,9%)

anyone else notice that? or is it just my throttle that's worn? (Changed axis to 82% so I could use the whole map)


« Last Edit: October 11, 2021, 09:51:05 AM by ZpiXDK »	Logged

You want some tuning with that pop and bang?
-Nahh it’s not good for the engine

Gpepes2012

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	Re: m3.8.3 S3 INJECTORS MAF VR6 SCALED MAPS « Reply #34 on: October 11, 2021, 04:26:53 AM »

Another question. According to the wideband in which areas kflf map do I make changes? From where to where is the area for idle, part load and wot? The changes must be made in each area separately by% to the desired?


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Gpepes2012

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	Re: m3.8.3 S3 INJECTORS MAF VR6 SCALED MAPS « Reply #35 on: October 11, 2021, 04:37:42 AM »

Quote from: Gpepes2012 on October 11, 2021, 04:26:53 AM

For example is this right?


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ZpiXDK

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	Re: m3.8.3 S3 INJECTORS MAF VR6 SCALED MAPS « Reply #36 on: October 11, 2021, 09:35:12 AM »

Quote from: Gpepes2012 on October 11, 2021, 04:37:42 AM

For example is this right?

Your X-axis is wrong. (Factor 0,050000)

You log RPM, load and AFR (This is tricky as you probably log RPM and Load on PC and AFR by the gauge)

then you look at RPM and Load at the AFR you want to correct

Looking at my map:
Let say 6000RPM and 10ms you want to lower AFR, then increase 1,359 (35,9%) so it correct for more fuel.

log Load at Idle to find idle area (Pretty sure it's up to 1,5ms, maybe even up to 2ms)
and so on.


« Last Edit: October 11, 2021, 09:38:36 AM by ZpiXDK »	Logged

You want some tuning with that pop and bang?
-Nahh it’s not good for the engine

Gpepes2012

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	Re: m3.8.3 S3 INJECTORS MAF VR6 SCALED MAPS « Reply #37 on: October 13, 2021, 11:01:29 AM »

Thank you.For example how much need to increase 1,359 value if afr is lean?


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ZpiXDK

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	Re: m3.8.3 S3 INJECTORS MAF VR6 SCALED MAPS « Reply #38 on: October 14, 2021, 01:56:09 PM »

Quote from: Gpepes2012 on October 13, 2021, 11:01:29 AM

Thank you.For example how much need to increase 1,359 value if afr is lean?

Right now it inject 10ms*1,359 = 13,59ms (so in 13,59ms it inject fuel)

If you want to go leaner (Rise AFR) you need to decrese the value.

10ms * 1,300 = 13ms. (you inject less time = less fuel)

Ofcause you have other correction maps, so the real output will be different.


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You want some tuning with that pop and bang?
-Nahh it’s not good for the engine

Gpepes2012

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	Re: m3.8.3 S3 INJECTORS MAF VR6 SCALED MAPS « Reply #39 on: December 02, 2021, 07:50:40 AM »

Hello, I open the topic again. Suppose I put 630cc injectors.Khfm must be 277/630*43680=19205?


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moritzmkiv

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	Re: m3.8.3 S3 INJECTORS MAF VR6 SCALED MAPS « Reply #40 on: November 19, 2022, 05:59:37 AM »

Quote from: _nameless on September 27, 2021, 09:10:22 AM

Sure let me look in my magic globe here and see how you did.... Come on for real?? These cars need to be tuned on a wideband lambda for good results, you cant just take the maf curve from the vr6 file and expect it to work proper on the first shot when calibrating injectors too. Last one I DID was 440cc injectors and a vr6 maf with a k04-001 and it took a good 5 edits for fueling and maf, and another 5 or so for boost control and timing. IN most cases youll need to tune startup fueling too.

Hey, im having the very same project (440cc inj, k04001). A friend of mine doing the software but runs in some difficulties with linearising injectors. We didnt touch MAF map so far, running stock maf right now.

Would you be willing to share your file with us? You would really help us out!!
Best regards, Moritz


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