Question:

Can I fit a lambda sensor to my engine to enable it to pass emissions?

Answer:

Your engine will need to be mapped correctly first and your car needs to be equipped with the correct exhaust system. The engine should not be too highly tuned and capable of running Lambda 1.

Lambda control should only be used as either a tuning aid or for emissions, it cannot fix an engine that has been mapped incorrectly, it is only there to trim or monitor the engine’s emissions to ensure they remain within original programmed limits.