Golf Lambda Bypass?

[cobra kid]

A mate/neighbour has a Mk3 Golf GTi 2.0. He is wanting to decat it at the end of the month. Is there a way of bypassing the lambda sensor or will it mess up the mixture badly? What's the normal practice?

Cheers,

CK

[steveo3002]

usual way is to fit the sensor in the cat bypass pipe...most already have the threads for it

[cobra kid]

Think I got the wrong end of the stick.....he wants to bypass it now. He thinks it is playing up and causing erratic engine behaviour. Anyway of fooling the ecu??

[steveo3002]

if you suspect its dodgy ,unplug it and see if the problem goes away