Exhaust sensors - needed or not

[bigearmuffs]

As above, I am using a 350Z engine and gearbox for an engine swap, I will be using all the 350Z loom, dash, etc. The exhaust I am using has decat downpipes, do I need to fit the exhaust sensors and connect them back up to the loom or does it not matter, I am not worried about warning lights as the car is MOT and Tax exempt because it is over 40 years old. However I do need it to run right, cheers in advance, the reason I ask is because the decats come with optional blanks so this made me think it might be able to do without the sensors.

[ZMANALEX]

Not required, however you can fit them and use UpRev to turn them off to avoid the pesky dash lights.