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hey guys

just wondering if i had a muffler inlet of 4 inch and outlet of 4.5 inch, would i lose any power or torque?

i think i have got a 3 inch cat back pipe but have standard muffler and wanting to change for less restriction.

thanks in advance

dee

u referring to the apexi N1 muffler ?

:headspin:

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JASMA isnt a brand... its the Japanese something something something something lol cant remember it off the top of my head but its basically saying its passed the JASMA tests... iie. its not too loud

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