NefMoto > Technical > Tuning > Looking for RS4 MAF data in 95-100mm housing
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Author Topic: Looking for RS4 MAF data in 95-100mm housing  (Read 1217 times)
sda2
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« on: May 08, 2023, 12:05:47 PM »
Hi folks,

Im looking for reliable data for the RS4 maf sensor element in a 100mm housing.

Unfortunately I didnt find any data for the available housings.

Thanks in advance.
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prometey1982
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« Reply #1 on: May 09, 2023, 12:07:22 AM »
Quote from: sda2 on May 08, 2023, 12:05:47 PM
Hi folks,

Im looking for reliable data for the RS4 maf sensor element in a 100mm housing.

Unfortunately I didnt find any data for the available housings.

Thanks in advance.
Multply stock RS4 map values to squares's difference between stock and new housings. I.e. new_value = new_housing_square/old_housing_square * old_value
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BlackT
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« Reply #2 on: May 09, 2023, 03:12:17 AM »
http://nefariousmotorsports.com/forum/index.php?topic=4839.0

But be aware, RS4 MAF signal in original housing is very bumpy without airbox or venturi before it.
« Last Edit: May 09, 2023, 03:18:25 AM by BlackT » Logged
sda2
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« Reply #3 on: May 09, 2023, 03:56:02 AM »
Quote from: prometey1982 on May 09, 2023, 12:07:22 AM
Multply stock RS4 map values to squares's difference between stock and new housings. I.e. new_value = new_housing_square/old_housing_square * old_value

Thank you I'll try it.

Quote from: BlackT on May 09, 2023, 03:12:17 AM
http://nefariousmotorsports.com/forum/index.php?topic=4839.0

But be aware, RS4 MAF signal in original housing is very bumpy without airbox or venturi before it.

Thank you! We've been using RS4 MAFs for a long time in forced induction BMW setups and I found Vibrant filters to work really good even without an additional airbox.
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BlackT
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« Reply #4 on: May 09, 2023, 05:40:59 AM »
Yes, with some filters it work really good.
This is log without any air filter or airbox, this thing betwen 3000 and 4000 rpm is turbo surge (tipical for K04-064 turbo) But still rest of RPM range whole time signal is bumpy. When I put air filter with ventury that signal is okay. But don t have any log in this moment
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