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F10 / F11 (2011 - Current)
The new chapter in the highly successful story of the BMW 5 Series Sedan (F10) and wagon (F11)

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  #1  
Old 01-06-2013, 02:24 PM
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Air Filter mod: Recommended for N55?

I haven't looked into an Air Filter mod since my Mustang days since on N/A motors and brands like M-B/BMW I've found that messing with the OEM dynamics on something so miniscule isn't really worth it.

However, this being a Turbo, and knowing some Turbo cars see considerable gains from a simple and healthy Air Filter type of mod (again though, talking about "lower end cars" that I've had experience with in the past on this), is it something worthwhile on a BMW? Or would it be a waste of money, or regressive?

I also wouldn't be opposed to some extra throat to what is IMO an already nicely throaty motor.
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  #2  
Old 01-06-2013, 03:28 PM
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Will add noise at expense of fouling your MAF if you use an oiled filter.

Also, there are virtually no performance gains on a FI car unless the stock filter is really restrictive.
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Old 01-06-2013, 04:09 PM
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Quote:
Originally Posted by Needsdecaf View Post
Will add noise at expense of fouling your MAF if you use an oiled filter.

Also, there are virtually no performance gains on a FI car unless the stock filter is really restrictive.
Thanks, was hoping that was the case as I don't need to spend the extra money.

I figured it would be a moot mod since on Turbo cars that DO benefit from it, you see tons of threads about "Intake/Air Filter" in their respective Forums. I figured BMW would dial the motor in pretty much as best it should be from stock.
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