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08-12-2007, 08:17 PM
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#25 |
 Drives: Yaris S, Mazda 3 Join Date: Aug 2007
Location: Buffalo NY
Posts: 2
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With the Yaris and many new cars the ECU re-learns the adjustments. One way to stop the ECU from changing the tune is to un-hook the first O2 senor on the exhaust. This works on most vehicles including the Yaris. The only bad thing about this is that it creates a check engine light but the ECU will keep the tune. I had to do this on my buddies 04' civic and my old Mazda 3 Turbo. Works with the E-manage and the Apexi's.
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