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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Need to pass emissions have Mhd & dp fix still getting cel. Help



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      05-25-2018, 02:31 PM   #1
D.I.P.
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Need to pass emissions have Mhd & dp fix still getting cel. Help

2011 335i X drive n55. Have Vrsf catless DP and bought and installed Vrsf DP fix. I flashed the car to stage 0, do I need to check the catted dp/OEM dp option in MHD or leave it unchecked? I ran the car for about 50 miles with the stage 0 flash with the Catted/OEM option unchecked and as soon as I turned the engine off and back on I got a cel for 02 sensor. I have double checked that the 02 sim is installed properly and the light blinks when the engine is running.
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      05-25-2018, 11:14 PM   #2
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Quote:
Originally Posted by D.I.P. View Post
2011 335i X drive n55. Have Vrsf catless DP and bought and installed Vrsf DP fix. I flashed the car to stage 0, do I need to check the catted dp/OEM dp option in MHD or leave it unchecked? I ran the car for about 50 miles with the stage 0 flash with the Catted/OEM option unchecked and as soon as I turned the engine off and back on I got a cel for 02 sensor. I have double checked that the 02 sim is installed properly and the light blinks when the engine is running.
Check the box for Catted/OEM dp and reflash. Leaving that unchecked disables the O2 emissions check.
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