2.5 in mazda 3 is very equivelant to a v6 in bigger cars like accord. They are also very much like a turbo charged engines as they provide lots of power as low as 1500 rpm. I believe 2.5 has the supperior on low rev daily driving and ver high speeds. In between the difference is close to nothing. Skyactiv Tuning- OVT Accurate information. Hey folks, OVT here. Use reddit occasionally and have seen some interest with things related to our tuning. -calibrated over 1000 vehicles globally. Highest safe gains available globally (until proven otherwise) Will be releasing a bolt-on 300HP turbo kit for the 2.0L, and 2.5L (380HP) -Skyacitv EcuTek Aceite recomendado para los motores de Mazda 3. Determinar qué cantidad de aceite de motor necesita su coche. Cambiar 5000 km/ 6 meses: 0W-20: 3 SKYACTIV-G 2.5 But for $500 and a handheld tuner, you get a completely different feeling 2.5L when you put the pedal down. I've driven the 2.0L and 2.5L, the 2.5L is notably faster stock vs stock, but 2.5 aftermarket support is limited for the most part. The stock headers are plenty good. They look wild, but they do the job. Mazda 3 Peformance Parts. The Mazda 3 is designed to be quick off the line and aggressive in the curves. In the world of compact cars, the Mazda3 offers a true performance driving experience. CorkSport has been providing Mazda 3 performance parts since the cars release. Introduced in 2004, the Mazda 3 was built to replace the Protege compact Final stage 1 175 ps/km/hp / pk /cv , 223 NmChip tuning Mazda 3 skyactiv-g 2.0 120 hp / pk / ps stage 1 . Dyno run / sheet There are some individuals who tried tuning their Mazda 6 2.5 skyactiv on regular vs. premium gas, then reported the differences in gains on the Mazda 6 forums. Since there hasn't been a lot reported for 87 tunes on 3rd generation Mazda 3s, I'd ask Mat what gains might be possible. Introduced last year, Mazda's new direct-injected 2.0-liter four-cylinder engine (dubbed Skyactiv-G) returns as the star of the Mazda 3's power trio. Joined to a six-speed manual or six-speed qhPtH.