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      05-01-2012, 02:19 PM   #132
Rekrul
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Drives: Space Gray e92 M3
Join Date: Aug 2011
Location: Purgatory

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Quote:
Originally Posted by mcp202 View Post
Makes sense. I was wondering about the O2 readiness light when you show up to the dealership with an Akra Evo and the light is off....
It is not about the light on the dash. ESS's tune doesn't show the O2 sensors being ready(when being checked for smog) vs Evolve which does. ESS I believe utilizes a different approach. Either way, you want to flash back to stock before going to a dealer.