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08-16-2017, 10:04 PM
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#13 |
  
Drives: 08 Yaris Liftback S (RIP 07) Join Date: Apr 2007
Location: Fair Lawn, NJ
Posts: 1,379
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Yes retains stock Ecu. Think of this as an in between the engine and the Ecu. It sends singles data back to the Ecu to assume normal conditions meanwhile useing your own map. If you tune wrong you will throw codes. If tuned right you won't. As I said before. I live in New Jersey where state inspection is mandatory anything 95 or newer.
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