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      08-16-2012, 10:36 AM   #44
E46 + E90

Drives: E46 M3 + E90 M3
Join Date: Jul 2008
Location: Illinois

iTrader: (1)

Garage List
2009 BMW M3  [0.00]
2002 BMW M3  [0.00]
Originally Posted by kawasaki00 View Post
Sign me up

When it says retains O2 readiness does that mean whe the car is plugged in at the inspection station it thinks it is good to go, like the cat is still there?
You are absolutely correct! They implemented this feature in the E46 M3 for quite some time and I will say that I saw first hand, a 100% MAF-less and catless E46 M3 pass OBDII Readiness Emissions in Illinois.

There was a lot of confusion among the E46 M3 guys, but it's important you leave your post-cat O2 sensors plugged into the wire loom! Some thought they could completely remove the whole sensor, which led to a misunderstanding and some slight problems.

You're making a great decision signing up for the Group Buy! The Evolve tune is the only modification I have on my E90 M3 and I don't feel like adding much more.
E90 M3 DCT|Melbourne Red . Speed Cloth | My Build Thread
E46 M3 6MT|Jet Black . Black Nappa Leather | My Build Thread