Hi, I'm installing a John gemi chip. I already have the bike decatted. What air filter would you recommend?
Standard air filter, replace regularly, unless you own shares in K&NHi, I'm installing a John gemi chip. I already have the bike decatted. What air filter would you recommend?
K&N gives you a couple of additional horsepower

Ha ha, who told you that..![]()
A dynoed R1100R, 2-3 HP more vs stock paper filter. The R1100GS has pretty much the same air filter setup.
I know this will seem as heresy to some but HT were clear, a standard air filter changed at same time as oil filter will be far better for your engine than a K&N which is either not oiled at all or as is usually the case, over oiled.Have you a before and after graph ? BMW would be very interested in such a percentage gain for so little effort. The inlet tube and airbox offers more restriction than the air filter.
Have you a before and after graph ? BMW would be very interested in such a percentage gain for so little effort. The inlet tube and airbox offers more restriction than the air filter.