Lamba sensors

[RyanWaters]

Ive got a fault code. Lamba sensor B1 S1 performance too low. After replacing the sensor ive still got the code. Its a decat exhaust. And with this the car misfires/lumpy when you let off the accelerator when on boost. Any ideas?

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[RUM4MO]

What make and model of B1 S1 Lambda sensor did you buy?

 

[RyanWaters]

The tuning company i sent it to supplied and fitted it for me. Im not sure i think it must of been genuine because it was over £100

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[RUM4MO]

Well as they are a tuning company I'd expect them to be experts and sort this out quite quickly?