Originally Posted by wireframeX

Hi

There is some news from France.

Just intalled my HF Cats (INVIDIA) see photo



After few kilometers I have these codes
P0139 - O2 Sensor Circuit Slow Response Bank 1 Sensor 2
P0159 - O2 Sensor Circuit Slow Response Bank 2 Sensor 2
P0137 - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2
P0157 - O2 Sensor Circuit Low Voltage Bank 2 Sensor 2

Can someone give me a good advice and what to do ?

Thanks
Phil