Cold Air Intake Question

[NickKps]

I own an 2012 Honda Civic IX Hatchback 1.4 i-VTEC (100 Hp) and my question is if it's worth to install a custom Cold Air Intake ( because K&N is not making an CAI kit for this model )

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[JamesT]

For power increase? not worth it. For sound? probably.

 

[NickKps]

For power increase? not worth it. For sound? probably.

I am also thinking about installing an exhaust with catalytic converter and I would like to ask, what diameter should the exhaust be.

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