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      02-18-2018, 03:04 PM   #122
Seba77W's Avatar

Drives: BMW 435i Xdrive Coupe
Join Date: Mar 2017
Location: Chicago IL

iTrader: (0)

Originally Posted by 1QuikWS6 View Post
Originally Posted by jh_f30 View Post
You are correct. Turning the light off turns the light off. I don't know about the other tunes, are there any that turn the light off without turning the light off?
I was under the impression that 'Turning the light off' was just that - it turns the CEL light Off on the dash, but does nothing for allowing O2 sensor readiness in order to pass emissions OBD2 plug in test?

How do you pass emissions test in Cali with catless DP?

I was told that here in PA, with catless DP, even if light was turned off - I would not pass the test as O2 sensors would not show ready

Which is why I went with catted FabSpeed DP - I have not had a problem passing emissions with this DP & I have nothing turning anything off - it passes with DP & O2 sensors installed
Me too!
2014 435i xDrive M-Sport, Fabspeed cat, Active Autowerke axle back, CTS Turbo intake, ER charge pipe, ER Competition Intercooler, MHD Tuning Stage 2+