exaggerate or muffler

Hello, after a long break, I said let me open another topic :),

The fuel of my 206 xt vehicle went from 0.30 krş to 0.50, I use gasoline, the masters said that the last muffler should be replaced, I think if I want to take it from pejomarket, or I think if I have an abart exhaust, I want to get your ideas how much it would be if I wear abart, 1.4 engine gasoline, if it is abart If it burns 0.30-0.31, I will exaggerate until the summer

Exaggeration exhaust has no use, I recommend original silencer, you will use it healthily for many years, also with high exaggeration exhaust in your chances of punishment.