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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 12-03-2014, 05:06 AM   #1
Registered User
Join Date: Jun 2012
Location: New Jersey
Posts: 653
My Ride: 2001 M3 Convertible
Emissions and Software

I'm going to be doing an evolve tune this month for my car but I have a few questions before I place my order. My car is catless and I will be disabling my rear o2 sensors. Will this mess with the OBD2 readiness? I'm in jersey and I'm not sure when they check for when they do smog. Also, if I disable and delete the secondary air pump via software and disable the cold start, will this interfere with the readiness? I know I will probably fail for the sniffer test if I take it to a state testing station but I'm not worried about that at the moment. I still have my stock headers just incase. My main reason for getting rid of the cold starts and secondary air pump is the cold starts are so loud and sometimes leave early in the morning and I don't want angry neighbors

Should I just use 02 simulators instead?

SGT catless headers

Full BW 3.5" Resonated Race Exhaust w/ diffuser

Tein S-Tech Lowering Springs
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