Refreshed 2014 Honda Civic Si Coupe Coming to 2013 SEMA Show

I wonder what they mean by re-tuned exhaust, i looked up the exhaust systems for both 2013 and 2014 si sedans and the only difference in the whole system from motor to muffler tip is the muffler being a different part number but if you look at the catalog pictures they look exactly the same, i wonder if the different part numbers mean that the internals of the muffler has been maybe debaffled a bit to let it flow better
2013 SI sedan is 18307-TR7-A11
2014 SI sedan is 18307-TR7-A21
 
I wonder what they mean by re-tuned exhaust, i looked up the exhaust systems for both 2013 and 2014 si sedans and the only difference in the whole system from motor to muffler tip is the muffler being a different part number but if you look at the catalog pictures they look exactly the same, i wonder if the different part numbers mean that the internals of the muffler has been maybe debaffled a bit to let it flow better
2013 SI sedan is 18307-TR7-A11
2014 SI sedan is 18307-TR7-A21
I thought they changed the down pipe and that's where the 4hp comes from. Muffler and cat are more than likely the same between 2013-2014
 
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