Stage 3 AI OBD2 Performance Chip for Citroen | Plug-and-Play Engine Tuning Module +40 HP / +45 TQElevate the "Advanced Comfort" of Your Citron Your Citron is designed for comfort. Now, give it the power to match. Citron vehicles are famous for their "Magic Carpet" ride and innovative design. However, strict European emissions standards often leave engines like the PureTech and BlueHDi feeling restrained. This results in throttle hesitation and a lack of punch when you need to join a highway or overtake quickly. The Stage 3 "Grand Tourer"