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  1. GT/GTS
    I've been reading around a few sites regarding how the ECU behaves in the absense of an O2 sensor(s). On 3Si some guys found that by removing atleast one of the primary O2 sensors, the ECU would go get stuck in Open Loop mode with fixed fuel trims. Needless to say this has made tuning with a...
  2. GT/GTS
    anyone had any real tuning experience with this motor? i have a 2004 with a turbo kit and emanage ultimate. the problem i'm getting is that the factory ecu will NOT go out of closed loop even after 5 seconds at 7 psi. what that means is despite the amount of fuel i add with either the airflow...
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