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      09-06-2014, 10:42 PM   #16
scott135i
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Drives: 2020 X5 M50i
Join Date: Feb 2009
Location: NYC Metro

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Quote:
Originally Posted by marcielago View Post
So why can't a piggyback be used with upgraded turbos?
B/c it cannot control the timing and fueling tables with the needed range and precision.
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