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 Post subject: Re: Vehicle Speed Sensor - MS41.2 into E30
PostPosted: Tue Sep 13, 2016 9:33 pm 
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Joined: Wed Oct 21, 2015 2:36 am
Posts: 980
VSS is in the 0.43 definitions under "Limiters"


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 Post subject: Re: Vehicle Speed Sensor - MS41.2 into E30
PostPosted: Tue Sep 13, 2016 9:40 pm 
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Joined: Thu Aug 29, 2013 10:54 pm
Posts: 15
ba114 wrote:
VSS is in the 0.43 definitions under "Limiters"


Not in 41.1, just 41.2


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 Post subject: Re: Vehicle Speed Sensor - MS41.2 into E30
PostPosted: Tue Sep 13, 2016 10:13 pm 
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Joined: Wed Jan 22, 2014 6:54 pm
Posts: 1773
offset wrote:
busterhax wrote:
What do you need help with? The answer is in what you quoted. I don't see how this will impact dyno tuning, especially on 41.1. The VSS PRM limit is defined so you can set your rpm limit to whatever you want.


I don't know how to find/change that value in my .bin. I know some maps are based on speed and I don't want my VSS being off by 5.3333 to effect when my vanos comes on as I will be attempting to tune at various loads/speeds

Vanos isn't vehicle speed based on 41.1. Just RPM 2d map. I can't think of anything speed based that will impact Dyno tuning on 41.1

Just make the change in a 41.2 file then look at the differences then make the value change at the location in your previous quote in your 41.1 bin.


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 Post subject: Re: Vehicle Speed Sensor - MS41.2 into E30
PostPosted: Tue Sep 13, 2016 10:21 pm 
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Joined: Wed Oct 21, 2015 2:36 am
Posts: 980
check your PMs


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 Post subject: Re: Vehicle Speed Sensor - MS41.2 into E30
PostPosted: Tue Sep 13, 2016 10:46 pm 
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Joined: Thu Aug 29, 2013 10:54 pm
Posts: 15
Got it figured out. Thanks everyone


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 Post subject: Re: ms41.0 to ms41.2 launch control help
PostPosted: Fri Sep 16, 2016 6:05 am 
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Joined: Sun Feb 21, 2016 11:56 pm
Posts: 40
Location: russia 56
Speed car in ecu ok?


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 Post subject: MS41 vehicle speed factor
PostPosted: Fri Jul 28, 2017 6:28 am 
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Joined: Wed Apr 26, 2017 4:43 am
Posts: 98
Location: Georgia
Gents, there's a question (a look through forum didn't help):
What is the conversion factor for these values?
EDIT: it's 1*X. Don't forget that its Big Endian, so LSB first.
e.g. for 641 at address E2 (partial) and 140E2 (full) we are to change 9F 17 (it's 6047 in stock) for 88 04 (1160) when doing e30 swap.


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 Post subject: Re: Vehicle Speed Sensor - MS41.2 into E30
PostPosted: Fri Mar 23, 2018 2:15 am 
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Joined: Mon Oct 17, 2011 1:57 pm
Posts: 260
Location: Sri Lanka
Rasp wrote:
41 - E2h, 59 - D8h, 60 - 17Ch

I think values for this calibration is different by default wheel size - for R15 wheels value is 6047, R16 is 6089, R17 is 6185.

Any Confirmation on these values?
if this can be confirmed correctly, we could define a definition switch on this


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 Post subject: Re: Vehicle Speed Sensor - MS41.2 into E30
PostPosted: Fri Mar 23, 2018 3:27 pm 
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Joined: Mon Sep 14, 2015 2:51 pm
Posts: 36
Location: Norway
RAW 3450 , Applied in e34 With 188diff 3.73 17inch , corrected to gps. Its very hard to get it correct in e34(same as e30) because slow update value. 48tooth abs e36 VS 9 tooth diffrential (?)


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 Post subject: Re: Vehicle Speed Sensor - MS41.2 into E30
PostPosted: Mon Sep 24, 2018 2:11 pm 
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Joined: Sat Apr 08, 2017 2:19 pm
Posts: 46
Rasp wrote:
41 - E2h, 59 - D8h, 60 - 17Ch

I think values for this calibration is different by default wheel size - for R15 wheels value is 6047, R16 is 6089, R17 is 6185.



sorry for up the post.

so for a ms41.2 in e30 with R16 wheels i need to use the rr editor and use vehicule speed correction factor table set to 1160 (raw) like previous post says or i need to set to 6089 or 6089/5.333 = 1140??


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 Post subject: Re: Vehicle Speed Sensor - MS41.2 into E30
PostPosted: Sun Jan 05, 2020 10:21 am 
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Joined: Thu Mar 30, 2017 7:26 am
Posts: 112
Location: Poland
If correction value will be 1160 You will hit 255km/h while driving 120km.

Yesterday did some test while tuning AFR:
car e30
180mm diff 3,15 from e36 328i
9 pulse
17" wheels
ECU MS41.2

Tested few values and closest i have put 3500 +- 20km/h read in RR Logger and compared with gauge.

_________________
E30 Coupe Stock Engine M62B44TU @ 0.5bar ~ ME7.2 ~ Almost done :)
E30 Sedan Stock Engine M52B28Turbo @ 0.5bar ~ MS41.2 ~ 328Hp / 448Nm
Need help in Tuning/Modding MS41/MS42/MS43/MS45/ME7.2 ? Message me i can help You out for a coffee cup :)


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 Post subject: Re: Vehicle Speed Sensor - MS41.2 into E30
PostPosted: Sun Jun 14, 2020 6:53 am 
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Joined: Mon Jan 27, 2020 7:19 pm
Posts: 9
Is this correction value matters for the speed dependent rev limiters? do someone has a value for my 92' 18is chasis with 23i engine ? i have the stock 1.8is diff (3.45 ratio)


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 Post subject: Re: Vehicle Speed Sensor - MS41.2 into E30
PostPosted: Sun Feb 21, 2021 6:40 pm 
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Newbie

Joined: Mon Dec 07, 2020 2:40 am
Posts: 20
Edit: Okay, I think I figured it out. I wanted to verify the correct value for the Land Rover Defender 2.8i in the MS41.0 ROM so I can transfer the value to MS41.2 for installing the S52 in the Land Rover. In the Land Rover 2.8i ROM the value at 0xE2h is E204h, so that would be 1250. That's very close to the value I calculated based on the impulses from the speedometer. I calculated 1267. So 1250 must be the correct value.

I based my calculation on 5095 impulses per km (converted from 8200 impulses per mile) that the Defender electrical library document specifies is the output from the speedometer to the DME. I calculated the conversion factor based on the 4663 impulses per km the E36 instrument cluster expects to see from the 9 tooth wheel in the diff, so the E36 DME is expecting 24869.3333 impulses per km from the ABS/ASC unit.


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 Post subject: Re: Vehicle Speed Sensor - MS41.2 into E30
PostPosted: Thu Dec 30, 2021 11:59 am 
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Newbie

Joined: Tue Oct 20, 2020 9:46 am
Posts: 2
Location: Ukraine
Guys, hello everyone.
I removed the ABS unit from the car, e36 m52b28 m41.0. Now I need to fix the firmware in order to correct the formula for calculating the VSS. I tried to put the value 8804h = 1160, but got the difference between the speedometer and ecu. That is, when the speedometer is 40 km per hour, the ecu sees 20.
I want to manually select the desired value but cannot figure out how to convert the value from decimal to hex? I try the Windows calculator in programmer mode, but for some reason it gives me different values, can you help me, what I'm doing wrong?
For example, I enter the value 1160 in dec, but in the hex it outputs 488


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 Post subject: Re: Vehicle Speed Sensor - MS41.2 into E30
PostPosted: Thu Jan 20, 2022 4:36 am 
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Newbie

Joined: Tue Oct 20, 2020 9:46 am
Posts: 2
Location: Ukraine
Can someone help?)


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