Most K-swap S-chassis builds are undriveable because tuners treat VTEC like it's still 1999. The K20/K24 isn't your old B-series. VTC (Variable Timing Control) completely changes how cam timing interacts with VTEC engagement, especially in a lighter S-chassis where throttle response matters more than peak numbers. → VTEC timing that actually complements VTC maps → Why most swaps feel laggy below 4k RPM → Tuning steps that prioritize street drivability → Setting up VTC for actual daily driving → Making the swap feel naturally aspirated smooth Save this before you start throwing parts at your K-swap and wondering why it drives worse than stock. #ThreePieceUS #KSwap #K20 #K24 #Schassis #240SX #VTEC #VTC #HondaSwap #Tuning #JDM #EngineSwap