Area 74O2 SIM on N54 install question

TT1351 · 08-19-2019, 12:58 PM

Currently running the adjustable BMS cat sim on my JB4 equipped N54 135i. Usually run with auto clear on. It's inspection time and I have turned off auto clear, whamo check engine light, cleared the code and it's back. Readjusted BMS from 6 o'clock position to 4ish o'clock, still getting CEL around 30-50 miles. Trying to get enough miles on ECU to re-establish history, but when I get close to where I want to be its CEL time.

With that said here is my question, been reading great things about the Area 74 Sim, anyone installed these? I suspect I need two according to the website, so if anyone has a how to, I'd be interested where and how you have it connected. The BMS unit currently resides next to the ECU, and the one unit is all that required AFAIK, unless I missed the fine print somewhere. TIA Fran

f87CSdrifterential · 08-20-2019, 08:24 PM

I had one installed on my 11 N55 before. Had it connected directly to the O2 sensor. 4 wires, 1 power, 1 ground & split the signal wire. Worked great as long as I didn't go WOT while setting readiness. As soon as I passed inspection, off it came.

08-19-2019, 12:58 PM	#1
TT1351 Captain 508 Rep 929 Posts Drives: 135, GTS, E30 M3+ Join Date: Dec 2008 Location: Massachusetts iTrader: (2)	Area 74O2 SIM on N54 install question Currently running the adjustable BMS cat sim on my JB4 equipped N54 135i. Usually run with auto clear on. It's inspection time and I have turned off auto clear, whamo check engine light, cleared the code and it's back. Readjusted BMS from 6 o'clock position to 4ish o'clock, still getting CEL around 30-50 miles. Trying to get enough miles on ECU to re-establish history, but when I get close to where I want to be its CEL time. With that said here is my question, been reading great things about the Area 74 Sim, anyone installed these? I suspect I need two according to the website, so if anyone has a how to, I'd be interested where and how you have it connected. The BMS unit currently resides next to the ECU, and the one unit is all that required AFAIK, unless I missed the fine print somewhere. TIA Fran
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08-20-2019, 08:24 PM	#2
f87CSdrifterential First Lieutenant 188 Rep 327 Posts Drives: 2020 M2 CS Join Date: Apr 2015 Location: NH iTrader: (4)	I had one installed on my 11 N55 before. Had it connected directly to the O2 sensor. 4 wires, 1 power, 1 ground & split the signal wire. Worked great as long as I didn't go WOT while setting readiness. As soon as I passed inspection, off it came.
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