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Free flow Panel Filter on 35iS or 35i

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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SO8
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Free flow Panel Filter on 35iS or 35i

Post by SO8 » Wed Jul 16, 2014 11:31 pm

Has anyone tried a free flow panel filter on a 35iS like an ITG / K&N / Pipercross ?

I am just talking panel filter replacement ... nothing else. With the increased boost of the iS I wondered if it may actually make a difference worth the expense ? I usually don't bother with such things but as the iS is touted as having improved breathing over the 35i I was surprised to see the airbox and airfilter + the connecting pipes all have the same part numbers.

Anyone tried one ... on a 35i or 35iS ?
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