E30 ITS build

[Frank Z]

I'm building an E30 to ITS specs
I'd like to put some headers on and a K&N air filter
I must leave the OEM air mass sensor and throttle body on.

Any recommendations for either the headers & down pipe or filter?

Thanks in advance

[bluptgm3]

AAF Header or Header Exhaust system . Unique design and mellow throaty sound.




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