Hi
The thickness of the steel will also have an effect on what is heard "in cabin".
Thinner the cat or box case the greater the resonance heard in the cabin..
The noise created can completely put you off using the car!! Waste of that £150 if you don't like the car once fitted..
Yes, I realise that cost can be an issue, particularly if you don't plan on keeping the car for long.
A matter of getting the best quality for your money...
Des. . .
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