What RON gasoline did you use, 98 octane? Is it true that the K14C and K14D engines with higher octane gasoline generate more power? With a Sport Hybrid of 129 hp stock and with 3000 km traveled, 98 octane gasoline remained at 127 hp engine power. In Europe, different forums tell you that the Suzuki Swift Sport turbo engines generate more power with higher octane fuel and I have seen that with the micro-hybrid it is not true, despite the fact that an Englishman in a video with a 98 gasoline mixture - 99 the K-14D obtained 141 hp to the engine. In both turbo versions of the Swift Sport they indicate 95 octane gasoline, they have the sticker on the tank lid. On the other hand, I have seen reprogramming companies with the 140hp K14C with 95 octane gasoline and it is between 151 hp and 153 hp in the engine, not the 140 hp that Suzuki declares. This gasoline thing is very strange, the K14C has a compression of 9.9 -1 while the micro hybrid K14D has 10.8 -1, both have an anti-knock detector but in theory, the higher the engine compression, the higher the octane rating should be. fuel. Mazda with its gasoline engines has very high engine compressions, almost like a diesel vehicle and instead indicates 95RON fuel.