N55 F10 Split Second PI Controller issue

jayster0966 · 12-05-2019, 05:42 PM

Hello everyone!

Need help with the port injection wiring on my 11 535 F10. According to everything I can find, I am supposed to wire the (yellow/black) wire of the controller to pin 9 of the OBD2 port to be able to obtain tach/rpm signal so that the controller knows what RPM we are at, but I get no signal at all when checking inputs with the R4 software. Green wire to yellow wire on TMAP works properly as i can see the boost pressure fluctuating.

Is there anyone out there who can help in giving some suggestions what to do next?

Is there another wire/place I can get RPM signal from?

Any advise would be appreciated.

TIA - Jay

Stück · 12-05-2019, 07:12 PM

Port Injection is a dead platform, especially true to N54's and N55's with the early style continental HPFP.

Purchase and install a Spool Helix 3x drive, no bull shit ancillary equipment to rely on or deal with setup. It just works, and maintains 100% DME control of fueling.

ziekxq · 12-05-2019, 10:09 PM

Yup get that and you can run 100 percent E85 which is capable of 600whp... That enough power for stock n55. No fuss no mess figuring out how much mixture you want... But you can mix and get up.to 700/750 whp.

12-05-2019, 05:42 PM	#1
jayster0966 Second Lieutenant 209 Rep 221 Posts Drives: 2011 535i Join Date: Jul 2018 Location: Orange County, CA iTrader: (2)	N55 F10 Split Second PI Controller issue Hello everyone! Need help with the port injection wiring on my 11 535 F10. According to everything I can find, I am supposed to wire the (yellow/black) wire of the controller to pin 9 of the OBD2 port to be able to obtain tach/rpm signal so that the controller knows what RPM we are at, but I get no signal at all when checking inputs with the R4 software. Green wire to yellow wire on TMAP works properly as i can see the boost pressure fluctuating. Is there anyone out there who can help in giving some suggestions what to do next? Is there another wire/place I can get RPM signal from? Any advise would be appreciated. TIA - Jay
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12-05-2019, 07:12 PM	#2
Stück Major 801 Rep 1,214 Posts Drives: F15 X5, E46 330i, R56 Mini.S Join Date: May 2016 Location: Houston, TX iTrader: (4)	Port Injection is a dead platform, especially true to N54's and N55's with the early style continental HPFP. Purchase and install a Spool Helix 3x drive, no bull shit ancillary equipment to rely on or deal with setup. It just works, and maintains 100% DME control of fueling.
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12-05-2019, 10:09 PM	#3
ziekxq Major 320 Rep 1,299 Posts Drives: 2011 535i xDrive Join Date: Feb 2016 Location: United States iTrader: (0)	Yup get that and you can run 100 percent E85 which is capable of 600whp... That enough power for stock n55. No fuss no mess figuring out how much mixture you want... But you can mix and get up.to 700/750 whp.
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