Who here has removed the second permanent filter from the airbox?
12-18-2010, 04:54 PM
#2
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My Ride: 2004 e60 M5 Replica
Titanium Silver
Premium Package
Premium Sound Package
Adaptive Xenon's
Apple iPhone cell interactive pared with iDrive Bluetooth setting
19 inch BMW OEM 166M rims,
Michelin tires
Sprint Booster - V2
Fidelity / BMW Extended Warranty 7 year / 100,000 miles
My AFE Cold Air Intake is installed, and looks great, but I have not drove or tested it yet, but had a BMW Mechanic intall it for me for 75.00, and I will get my BMW back on this Monday when I had some more work completed. (ask me again on Wednesday)
12-19-2010, 03:24 PM
#4
I did it prior to having my Dinan work done. Noticeable power bump (not huge but pretty good BHP/$ ratio - infinite), and you'll also notice slightly more intake roar (which is a good thing... 
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02-04-2011, 08:02 PM
#5
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I saw about 15-25 miles more on a tank of fuel after I removed the Charcoal filter. I am basing this off 3 tanks prior and 3 tanks after. No difference in driving styles.... Cannot feel any power difference.
