Mitsubishi Evo X Gains An Unthinkable 21 HP boost with KN Performance Air Intake System
K&N's 69-6546TWR Performance Air Intake System for the 2008-09 Mitsubishi Lancer Evolution 2.0L Turbo L4
Mitsubishi’s Lancer Evolution, once a highly coveted Japanese Domestic Market only vehicle, graced North American shores in 2003. Since then the Evolution, or Evo as it is commonly called, has undergone two significant redesigns. Each generation Evo is designated by a Roman numeral. 2008 saw the debut of the 10th generation, or Evo X. Featuring a newly designed all aluminum 2.0L turbocharged engine, and Super All Wheel Control, the Evo X is capable of producing nearly 300 horsepower in stock trim. Always hungry for more power, K&N engineers took one look under the hood and decided that more could be done.
That’s exactly what K&N did with Performance Air Intake System 69-6546TWR. Much consideration was put into the design of part number 69-6546TWR for the 2008 and 2009 Mitsubishi Lancer Evolution with a 2.0 liter engine. Unique features include a powder coated aluminum upper intercooler and turbo inlet tubes replacing the stock pieces for improved air delivery. 69-6546TWR incorporates a unique heat shield, which retains the use of the factory fresh air scoop. The result of this hard work and enthusiasm for performance is an incredible 21 horsepower gain at the wheels for the 2008-09 Lancer Evolution.
Mitsubishi Lancer Evolution 2.0L Turbo L4 with K&N's 69-6546TWR Performance Air Intake System
K&N’s Research and Development Department tested a 2008 Mitsubishi Lancer Evolution 2.0L Turbo L4 on our in-house dynamometer. Results showed a shocking peak horsepower gain of 21.42 horsepower @ 6,100 RPM! The 69-6546TWR provides improved performance with an attractive wrinkle-red powder coated aluminum intake and intercooler tubes to enhance the Evo X’s engine bay.

no dude you should get some 21″. And with? that mean 2.0 litter engine you could burn the rubber out of those wheels.
earthsurfing: Hey! Thanks for checking in. The '07 F-29 is an awesome bike if you choose your upgrades carefully. Here's my recommended first steps.
#1. Get lighter weight tires. The ExiWolfs on the bike are pretty porky. You could choose Ignitors, which are great all rounder tires and will help improve clearance in the rear at the same time.
#2. Get at least a new rear wheel. The rear wheel alone with the stock tire, tube, and cassette weighs over 8lbs! (As an example, a typical wheel from a 29″er weighs around 5.5-6.5lbs) You can realize a big weight savings here!
#3. A seat post and handle bar upgrade can also save some weight. The stock pieces are pretty heavy here.
#4. Not imperative, but the SRAM shifters and rear derailluer could be upgraded over time.
Those are the big areas that would really make a huge difference for the better on that bike.
Good luck and welcome to Twenty Nine Inches!