06-03-2012, 12:35 AM | #1 |
E70 LCI X5
2
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Ecu Upgrade
i have a question is the ecu upgrade good or bad for the engine and would it be in future lets say after using the car for 3 or 4 years Please need the answer and what is the best kind of tuning for the engine boosting the turbo or increase the RPM etc... |
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