Milka
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« Reply #15 on: December 29, 2013, 09:42:12 PM »
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RS4 Sensor in an S4 housing is same size etc as R32 MAF (RS4 sensor is same as the R32 Sensor)
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krunok
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« Reply #16 on: December 30, 2013, 12:33:05 AM »
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RS4 Sensor in an S4 housing is same size etc as R32 MAF (RS4 sensor is same as the R32 Sensor)
Unfortunately that is not so: R32 and S4 have the same sensor type which is HFM-5- 8.5 while RS4 has HFM-5- 9.7 |
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Milka
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« Reply #17 on: December 30, 2013, 08:28:19 PM »
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You are looking at a different MAF then as the R32 MAF sensor that I pulled apart had the exact same part numbers as the B5 RS4. There are different MAFs for a couple of different R32s, that's also why the MLHFM is slightly higher in the R32 than in the S4 even though the MAF IDs are exactly the same and they even have the same air straightener.
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Milka
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« Reply #18 on: December 30, 2013, 08:42:43 PM »
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The R32 part number I'm talking about is 07D906461 Here is a link to ECS, where you can see it's the same as the RS4 not the S4 as you can see the Diode/resistor (can't remember which one) and the little step on the bottom of the MAF sensor. http://www.ecstuning.com/Volkswagen-R32_MKIV--3.2/ES252201/I have tried RS6 MAFs, S4 MAFs, R32 MAFs, B5 RS4 MAFs and am now running A8 MAFs mainly for the flow straightener over the B5 RS4 units (this does slightly reduce the max airflow in MLHFM table) |
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ddillenger
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« Reply #19 on: December 30, 2013, 09:08:41 PM »
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The R32 part number I'm talking about is 07D906461 Here is a link to ECS, where you can see it's the same as the RS4 not the S4 as you can see the Diode/resistor (can't remember which one) and the little step on the bottom of the MAF sensor. http://www.ecstuning.com/Volkswagen-R32_MKIV--3.2/ES252201/I have tried RS6 MAFs, S4 MAFs, R32 MAFs, B5 RS4 MAFs and am now running A8 MAFs mainly for the flow straightener over the B5 RS4 units (this does slightly reduce the max airflow in MLHFM table) That is the IAT sensor, the naturally aspirated vehicles run it from the MAF. Turbo vehicles need to know IAT post turbo, so it's in the intake. |
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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 experience!
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Milka
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« Reply #20 on: December 30, 2013, 09:53:49 PM »
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Daz, Totally agree, but the B5 RS4 uses a MAF sensor with exactly that, with Part number F 00C 2G2 047. And here is a link to VWVortex showing the R32 MAF sensor exactly the same part number F 00C 2G2 047. Oh B5 S4s use Bosch MAF sensor F 00C 2G2 040. http://forums.vwvortex.com/showthread.php?4844154 |
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ddillenger
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« Reply #21 on: December 30, 2013, 10:00:30 PM »
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I have 4 RS4 MAF's here, none have that.......
HOWEVER, the B6 S4 has it, and also has the same part number.
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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 experience!
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Milka
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« Reply #22 on: December 30, 2013, 10:12:25 PM »
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Wow interesting all the MAFs I have from ECS have it, with the same part number.
Oh well I guess the part number is more important and the diode/resistor is not as the B5 RS4 and RS6 (mine) would not use the IAT function anyway
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krunok
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« Reply #23 on: December 31, 2013, 02:07:44 AM »
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Daz, Totally agree, but the B5 RS4 uses a MAF sensor with exactly that, with Part number F 00C 2G2 047. And here is a link to VWVortex showing the R32 MAF sensor exactly the same part number F 00C 2G2 047. Oh B5 S4s use Bosch MAF sensor F 00C 2G2 040. http://forums.vwvortex.com/showthread.php?4844154Part numbers you have posted are part numbers of the sensors and those sensors are of type HFM-5-8.5, as can be checked with Bosch online catalog: http://www.bosch-automotive-catalog.com/public/catalog/products?p_p_id=BoschWSRP&p_p_lifecycle=1&p_p_state=normal&p_p_mode=view&p_p_col_id=column-1&p_p_col_count=1&_BoschWSRP_wsrp-urlType=blockingAction&_BoschWSRP_wsrp-navigationalState=%2FWFS%2FAAGLOBAL-AA-Catalog-Site%2Fhr_HR%2F-%2FEUR%2FViewSearchProduct-ByNumberTypesWithOrderNumber%3Bpgid%3DD41D8CD98F00B204E9800998ECF8hqulSsFU%3Bsid%3Dhk-NWgEQ9swa9lPSAKEaoA6bJ6zlsKDz7qU%3D&_BoschWSRP_proxyportlet-remoteInvocation=trueEnter "0 280 218 074" for R32 MAF and you will see it has HFM-5- 8.5 sensor. If you enter "0 280 218 067" for RS4 MAF you will see that it has HFM-5- 9.7 sensor, which is a little confusing to me.  But anyway, if R32 MKIV sensor can support 1400 kg/h in MLHFM (effectively, when offset has been applied) in 73 mm diameter housing it would suit me perfectly. So, does it?  |
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« Last Edit: December 31, 2013, 05:16:04 AM by krunok »
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krunok
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« Reply #24 on: December 31, 2013, 04:09:17 AM »
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That is the IAT sensor, the naturally aspirated vehicles run it from the MAF. Turbo vehicles need to know IAT post turbo, so it's in the intake.
Hate to disagree but that is not the IAT sensor. It is called auxiliary (or additional) temperature sensor and is binded to pin 1 of the HFM 5 sensors. If that sensor is missing pin 1 is not used. Pls see screenshot from Bosch HFM5 catalog:  |
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jibberjive
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« Reply #25 on: January 02, 2014, 09:16:34 PM »
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Hate to disagree but that is not the IAT sensor. It is called auxiliary (or additional) temperature sensor
I don't think you're disagreeing, I think you said the same thing with different words. |
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Imho
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« Reply #26 on: July 02, 2021, 02:32:29 AM »
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Hello,
I am having some problem with RS4 MAF conversion from Hitachi in 551R me7.1
The problem is that it cannot measure anything more than 11g/s while on throttle.
IDLE shows stable ~5g/s
MLOFS set to 200
MLHFM copied from my previous conversion which worked fine..
edit: issue solved broken MAF out of the box
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« Last Edit: July 08, 2021, 01:20:30 PM by Imho »
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nyet
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« Reply #27 on: July 02, 2021, 12:59:08 PM »
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I don't think you're disagreeing, I think you said the same thing with different words.
I think the point is, some ECUs dont use that as IAT input, they use a separate IAT sensor |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease 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
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