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Author Topic: KRKTE CORECT DEFINITION  (Read 6083 times)
chiptuner123
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« on: May 05, 2020, 06:41:20 AM »

I use injectors 625cc Bosch,I set the  KRKTE,I start the car and I see that ,at full load the AFR is 13.00 I set again the KRKTE so at full load is 11.50 so,at the idle is abaud 13.00 -14.00 at part load are 12.5-14,5 and long term fuel is -14%. sort term fuel trim is 0.0% and only at part load fluctuates to +% -%


**Cold start warm up Correct.   You think I must ride the car many klm to adapt? I leave TVUB stock
Any opinion ??
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bamofo
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« Reply #1 on: May 05, 2020, 07:33:24 AM »

I use injectors 625cc Bosch,I set the  KRKTE,I start the car and I see that ,at full load the AFR is 13.00 I set again the KRKTE so at full load is 11.50 so,at the idle is abaud 13.00 -14.00 at part load are 12.5-14,5 and long term fuel is -14%. sort term fuel trim is 0.0% and only at part load fluctuates to +% -%


**Cold start warm up Correct.   You think I must ride the car many klm to adapt? I leave TVUB stock
Any opinion ??

You need to post Logs and your ROM File.
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chiptuner123
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« Reply #2 on: May 05, 2020, 10:40:09 AM »

I need advice what to check ,not tuning
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nyet
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« Reply #3 on: May 05, 2020, 11:04:09 AM »

I need advice what to check ,not tuning

No, you need tuning advice.

If you didn't already know what KRKTE/TVUB should be based on datasheet, which you clearly don't if you didn't touch TVUB.
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chiptuner123
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« Reply #4 on: May 05, 2020, 09:12:48 PM »

I use these injectors 0 280 158 123 is 625cc,But I am not have data chart.You think need to set the FKKVS,or FRLFSDP?
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nyet
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« Reply #5 on: May 05, 2020, 10:36:38 PM »

I think you need to set KRKTE and TVUB
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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
sda2
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« Reply #6 on: May 06, 2020, 11:33:11 PM »

Hello,

Some time ago I collected data of several 20VT injectors from their OEM calibrations.

The 0 280 158 123 were read from 997tt binary with matching A2L.

Edit: Keep in mind, that Porsche has a 3.8 bar fuel pressure regulator, so you want to use either the same pressure or fine tune those values.
« Last Edit: May 06, 2020, 11:37:04 PM by sda2 » Logged
dal
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« Reply #7 on: May 07, 2020, 04:02:55 AM »

Hello,

Some time ago I collected data of several 20VT injectors from their OEM calibrations.

The 0 280 158 123 were read from 997tt binary with matching A2L.

Edit: Keep in mind, that Porsche has a 3.8 bar fuel pressure regulator, so you want to use either the same pressure or fine tune those values.

Do you have OEM calibration data for 0 280 158 040?
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sda2
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« Reply #8 on: May 08, 2020, 01:09:27 AM »

Unfortunately not.

But you could look for injector data in standalone ECU software.

EMU black comes with a lot of sensor, throttlebody and fuel injector data Smiley
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chiptuner123
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« Reply #9 on: May 10, 2020, 12:52:18 AM »

Thanks for yours help Smiley
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