OBD RPM output

blacky999 · 05-05-2018, 09:43 AM

Hi guys is it possible to pick up a rpm signal, switched live and ground from the OBD port?

Billfitz · 05-05-2018, 09:47 AM

Yes, and speed as well. It's what add-on HUDs use for their data input.

blacky999 · 05-05-2018, 09:48 AM

Which pin outs are which, do you know?

blacky999 · 05-05-2018, 09:49 AM

This is what I'm trying to get them for but the pin locations don't match up

Billfitz · 05-05-2018, 09:50 AM

No clue. I use it with my HUD, Foxwell 510 and E-Sys. They know which pins are which, so I don't have to.

blacky999 · 05-06-2018, 12:55 AM

Anyone?

atzebmw · 05-06-2018, 07:57 AM

Pin 9 is the right one.
Maybe you should look at this .

Edit:
OK, i just see this is actually the same, but from the other side.
In any case, the diesel should have a black wire on Pin 9.

blacky999 · 05-12-2018, 05:27 AM

For anybody who searches for similar I found a solution. Canm8 RPM module wired in to the FEM can bus to give RPM readings

harkes · 08-09-2018, 05:45 AM

Quote:

Originally Posted by blacky999

For anybody who searches for similar I found a solution. Canm8 RPM module wired in to the FEM can bus to give RPM readings

Hi

You made this work? I am looking to hook up a Torqbyte CM5-LT for WMI and would like a rpm signal

blacky999 · 08-17-2018, 08:29 AM

Quote:

Originally Posted by harkes

Quote:

Originally Posted by blacky999

For anybody who searches for similar I found a solution. Canm8 RPM module wired in to the FEM can bus to give RPM readings

Hi

You made this work? I am looking to hook up a Torqbyte CM5-LT for WMI and would like a rpm signal

That's exactly what I am using. I used a canm8 rpm unit perfect

blacky999 · 08-17-2018, 08:30 AM

Some of my install

harkes · 08-17-2018, 09:05 AM

Wau. Nice install! Clean! Wish there was a stealth tank for the 1-series. Rpm signal is on OBD pin9 for my F-series so I am using that.

blacky999 · 08-18-2018, 07:41 AM

Quote:

Originally Posted by harkes

Wau. Nice install! Clean! Wish there was a stealth tank for the 1-series. Rpm signal is on OBD pin9 for my F-series so I am using that.

You will not get an rpm feed from there mate that's what I tried first

harkes · 08-19-2018, 12:07 AM

Quote:

Originally Posted by blacky999

You will not get an rpm feed from there mate that's what I tried first

But I do... Just set 3 pulses/rev and it reads correct. I have a problem with the MAP signal though, I cannot get it to read right. Its all over the place. Using TorquePro I see ~3-4psi when revving in neutral but I cannot get it to read that. Looking at the log I am thinking that there is some interference on the signal???

blacky999 · 08-19-2018, 01:58 AM

Sorry is yours petrol? That would be why as mines diesel

I used a stand-alone map sensor and took a feed from the inlet elbow

harkes · 08-19-2018, 04:46 AM

Quote:

Originally Posted by blacky999

Sorry is yours petrol? That would be why as mines diesel

I used a stand-alone map sensor and took a feed from the inlet elbow

Ahhhhh ok. Yes mine is petrol. Rather strange that makes a difference on the OBD output. OK, I'll contact support regarding the MAP

05-05-2018, 09:43 AM	#1
blacky999 Private First Class 115 Rep 150 Posts Drives: F31 335d M Sport Join Date: Nov 2013 Location: United Kingdom iTrader: (1)	OBD RPM output Hi guys is it possible to pick up a rpm signal, switched live and ground from the OBD port? __________________ 335d X drive, Turbo Dynamics hybrid turbos, Wagner Comp Evo2 IC, Torqbyte methanol injection, custom 3" exhaust. 451.2 bhp and 829nm
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05-05-2018, 09:47 AM	#2
Billfitz Lieutenant General 8225 Rep 16,060 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	Yes, and speed as well. It's what add-on HUDs use for their data input.
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05-05-2018, 09:48 AM	#3
blacky999 Private First Class 115 Rep 150 Posts Drives: F31 335d M Sport Join Date: Nov 2013 Location: United Kingdom iTrader: (1)	Which pin outs are which, do you know? __________________ 335d X drive, Turbo Dynamics hybrid turbos, Wagner Comp Evo2 IC, Torqbyte methanol injection, custom 3" exhaust. 451.2 bhp and 829nm
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05-05-2018, 09:49 AM	#4
blacky999 Private First Class 115 Rep 150 Posts Drives: F31 335d M Sport Join Date: Nov 2013 Location: United Kingdom iTrader: (1)	This is what I'm trying to get them for but the pin locations don't match up Attached Images __________________ 335d X drive, Turbo Dynamics hybrid turbos, Wagner Comp Evo2 IC, Torqbyte methanol injection, custom 3" exhaust. 451.2 bhp and 829nm
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05-05-2018, 09:50 AM	#5
Billfitz Lieutenant General 8225 Rep 16,060 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	No clue. I use it with my HUD, Foxwell 510 and E-Sys. They know which pins are which, so I don't have to.
	Appreciate 0 Quote

05-06-2018, 12:55 AM	#6
blacky999 Private First Class 115 Rep 150 Posts Drives: F31 335d M Sport Join Date: Nov 2013 Location: United Kingdom iTrader: (1)	Anyone? __________________ 335d X drive, Turbo Dynamics hybrid turbos, Wagner Comp Evo2 IC, Torqbyte methanol injection, custom 3" exhaust. 451.2 bhp and 829nm
	Appreciate 0 Quote

05-06-2018, 07:57 AM	#7
atzebmw Colonel 588 Rep 2,302 Posts Drives: Tesla Model 3 Join Date: May 2016 Location: Germany iTrader: (0)	Pin 9 is the right one. Maybe you should look at this . Edit: OK, i just see this is actually the same, but from the other side. In any case, the diesel should have a black wire on Pin 9. Attached Images
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05-12-2018, 05:27 AM	#8
blacky999 Private First Class 115 Rep 150 Posts Drives: F31 335d M Sport Join Date: Nov 2013 Location: United Kingdom iTrader: (1)	For anybody who searches for similar I found a solution. Canm8 RPM module wired in to the FEM can bus to give RPM readings __________________ 335d X drive, Turbo Dynamics hybrid turbos, Wagner Comp Evo2 IC, Torqbyte methanol injection, custom 3" exhaust. 451.2 bhp and 829nm
	Appreciate 0 Quote

08-17-2018, 08:30 AM	#11
blacky999 Private First Class 115 Rep 150 Posts Drives: F31 335d M Sport Join Date: Nov 2013 Location: United Kingdom iTrader: (1)	Some of my install Attached Images __________________ 335d X drive, Turbo Dynamics hybrid turbos, Wagner Comp Evo2 IC, Torqbyte methanol injection, custom 3" exhaust. 451.2 bhp and 829nm
	Appreciate 0 Quote

08-17-2018, 09:05 AM	#12
harkes Colonel 1077 Rep 2,357 Posts Drives: M135i, E39 M5, NSX and AE86 Join Date: Apr 2014 Location: Xiamen, China iTrader: (0)	OBD RPM output Wau. Nice install! Clean! Wish there was a stealth tank for the 1-series. Rpm signal is on OBD pin9 for my F-series so I am using that. __________________ M135i 8AT PWG, MHD, Pure Stage2, WMI via Torqbyte CM5-LT, Custom tuned by PureBoost (A Dane in China)
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08-19-2018, 01:58 AM	#15
blacky999 Private First Class 115 Rep 150 Posts Drives: F31 335d M Sport Join Date: Nov 2013 Location: United Kingdom iTrader: (1)	Sorry is yours petrol? That would be why as mines diesel I used a stand-alone map sensor and took a feed from the inlet elbow __________________ 335d X drive, Turbo Dynamics hybrid turbos, Wagner Comp Evo2 IC, Torqbyte methanol injection, custom 3" exhaust. 451.2 bhp and 829nm
	Appreciate 0 Quote