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#2 |
Boost Whore
Join Date: Jun 2009
Location: Northern Colorado
Posts: 33
Rep Power: 0 ![]() |
More than likely you installed the new o2 sensor wrong. The OEM sensor is a wideband 5v sensor, brand new it's about $250 from Mazda. You need to install it or just drive around with no front O2 sensor and be stuck in open loop and get horrible gas mileage.
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