What maf diameter for a 700 hp engine on a me7.5 controller?

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sda2

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	Re: What maf diameter for a 700 hp engine on a me7.5 controller? « Reply #15 on: January 20, 2023, 01:39:21 AM »

Quote from: BlackT on January 19, 2023, 04:48:35 AM

Yes on 4F 4.2 MPI BAT engine is M7.1.1 ECU with C167
And it use HFM6

EDIT: or maybe is not, I can't find MSHFMTPH in 4F file, but once when I tried to connect MAF signal from 2.7TT to 4.2 ECU I didn't read any airflow

When looking at parts list for 4F 4.2 BAT is find Bosch 0 280 218 069 which is HFM5 unfortunately Sad


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BlackT

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	Re: What maf diameter for a 700 hp engine on a me7.5 controller? « Reply #16 on: January 20, 2023, 02:56:21 AM »

Yes that's right Undecided

What about function for EGT, it read freq from EGT sensor
Maybe we can use that timer, I didn't look how function look and is this possible, only idea beacuse EGT output is Hz, and Maf is kHz


« Last Edit: January 20, 2023, 03:44:04 AM by BlackT »	Logged

tao13

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	Re: What maf diameter for a 700 hp engine on a me7.5 controller? « Reply #17 on: January 20, 2023, 11:48:12 AM »

I asked about map sensor for speed density not for stock file with maf.

Quote from: prj on January 19, 2023, 02:55:12 AM

No, a MAF is not useless, putting the stock MAF into a 90mm tube is useless because the tube is so big that the airflow won't be properly read there at idle anymore due to swirling.
Using something like a HPX element in a normal sized tube will work perfectly file.


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prj

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	Re: What maf diameter for a 700 hp engine on a me7.5 controller? « Reply #18 on: January 20, 2023, 05:34:09 PM »

Quote from: tao13 on January 20, 2023, 11:48:12 AM

I asked about map sensor for speed density not for stock file with maf.

Nobody was talking to you, and this topic is not about speed density.


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tao13

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	Re: What maf diameter for a 700 hp engine on a me7.5 controller? « Reply #19 on: January 21, 2023, 01:15:50 AM »

Yeah , yeah, ok genius!


« Last Edit: January 22, 2023, 04:21:01 AM by tao13 »	Logged

Kejsi

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	Re: What maf diameter for a 700 hp engine on a me7.5 controller? « Reply #20 on: January 21, 2023, 04:58:16 PM »

As the author of the topic, please calm down. Prj may not be the most polite forum user but he will always advise me


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