Re: power upgrades...
Sounds pretty much like a chip.... I think... Chips can do a lot for the engine, though you may no longer pass emissions testing. I believe (I could be wrong) that most engines are capable of more power, but are held back somewhat to meet certain EPA standards, etc. I'd say it's genuine. I know my brothers pop these into their BMW's and Audi's with good results. Not sure they keep the cars long enough (say 7 years, for example) to find out if there are any long-term complications...
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