The only thing I can think of is they damaged an 02 Sensor or it was not tuned correctly. But I'm thinking bad O2. Get under the car and see if the wires are messed up.
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2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness.
???Whp ???WTQ (Will find out come spring time)
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