The JB Plus tuner for N18-powered MINI Cooper S and JCW models (2011-2015) delivers real, safe gains: up to 20whp and 30wtq, with sharper throttle response and stronger mid-range pull.
Plug-and-play in under 30 seconds - no coding, no dealer tools, no warning lights
Boost increase of 2-4psi, matched with precise air/fuel and timing adjustments
Fully compatible with stock DME; no fuel economy penalty in normal driving
