Pre cat

Just seen a post on Facebook about smashing the pre cat out... Which seems good but will this mess with the emissions ect.
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I do :smile: they said it didn't make the flat spot worse either... I just wondered if anybody else on here had done the same thing
 
Well plenty of people have the toyosport which removes the pre cat and get through an mot, that's how mine was before I fitted the oreca exhaust. And it passed.