Motorcycle and Scooter appreciation

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Vince in reply to @hugo7

Well, it does not explicitly say that they are rigging the bike to pass the test.

It just says that for £50, they can tune the bike to pass.
And in some instances, it costs £100 to £150.

I imagine that they'll pop a new air filter, install some kind of bolt on catalytic dB killer, then tweak the carbs to make the old bike run lean then run the test.

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lynx in reply to @Vince

Getting the bike to run properly.

2 strokes pass the NOx test easily as a major factor NOx creation in combustion is combustion temperature, the higher the combustion temperature more NOx hence diesels have the issue more than petrol fuel vehicles.

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