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      11-25-2012, 03:17 PM   #6
First Lieutenant
Derek8819's Avatar

Drives: 2015 F80 M3
Join Date: Nov 2011
Location: New Orleans, LA

iTrader: (4)

It is amazing how different some of these forums can be. 1addicts is completely against filters like this, but others I am on show gains of 6-8hp almost every time. I am gonna say this, drop ins flow more air, plain and simple. Do they flow more dust too, well I think it depends on the brand/quality. I actually wondered if they were filtering ok on my Lightning and I went ahead and sent off oil samples to blackstone, the results showed more than adequate filtration. I will use a quality drop-in in every car I buy, they flow better and last longer. If you are worried, send off your oil sample.