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      09-22-2018, 12:51 PM   #87
hoot1987
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Drives: E90 ZCP
Join Date: Jun 2011
Location: Tysons Corner, VA

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Quote:
Originally Posted by eatsleepboost View Post
On my normal tune I told them to not turn off my post cat monitoring as I will most likely be using a HFC. They stated there is a good chance I will still need to flash to the emission tune tune to pass but I did not. I checked my rediness before I went for sticker and all were ready. MA allows only 1 not ready as well.
I am curious then if you swap back to catless X-pipe, with your normal tune that ESS left the 2 post cat O2 sensors 'on', did you ever get any fault codes or check engine light?
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