Stage 3 users generally notice more low end throttle response. Stage 3 works great on stock motors, even better with after market exhaust/air/ect. Both Stage 2 and Stage 3 operate well within the engine's tolerances. Stage 2 is recommended for bone stock setup with no intentions of adding any aftermarket exhaust or air intake. Stage 3 is recommended for slightly higher performance on a stock setup, and highly recommended for users with aftermarket exhaust/air or have plans for them in future.
The item "CDI Box High Performance Rev Module for Yamaha Kodiak 400 2004-2006 Stage 2" is in sale since Tuesday, February 11, 2020. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Components". The seller is "gear-junkies" and is located in Las Vegas, Nevada. This item can be shipped worldwide.