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- Thu Feb 09, 2012 8:36 am
- Forum: Modifications
- Topic: Exhaust Mod on 2003 1.9dci megane
- Replies: 3
- Views: 2599
Re: Exhaust Mod on 2003 1.9dci megane
Do you need a back box? regulations say you need at least one suppressor (silencer or restriction), the Cat counts as a suppressor so in theory you could just weld a metal pipe to the cat. I know someone who did it on a Ibiza and he said he didn't notice any difference in noise and the flow would be...