Universal O2 spacers with real precious metal Catalytic Converters lengthen the distance between the O2 spacer(s). We've taken our spacers a step further by having built-in catalytic converters to allow the ECU to properly read exhaust gas and perform at optimal performance.
Oxygen sensors can occasionally trigger a CEL on stock vehicles due to the new advances of technology and would require an O2 spacer to bring the vehicle back to equilibrium and allow the ECU to read exhaust gases within the proper threshold.
Hi, i have mclaren 570s ...i wanna install spacers O2 because turn on light check engine, but i need install only 2 spacers or 4 spacers??
Answer from the Fabspeed Team:
Hi Alex, yes you will only need to install 2 spacers, not 4. Hope this helps!