Slamming the car, and turbo charging wit cat delete is the responsible and secure choice.
Stick it on Q plates and you don't need a cat. Roof chop, IVA, re-register on a Q plate and you can lose the cat. Even though you'll need it for IVA. Stupid rules.
@Brommers started
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Slamming the car, and turbo charging wit cat delete is the responsible and secure choice.