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The only upgrade system that guaranteed horsepower gain with just simple plug & play.
Actual horsepower tested on-wheel using American DynoJet dynamometer.
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Horsepower dyno-tested graph comparison
Torque dyno-tested graph comparison
Blue indicator: Stock Honda Jazz
Red indicator: Honda Jazz with Max Racing Exhaust Stage 3 System upgraded (Stock Rims)
Green indicator: Honda Jazz with Max Racing Exhaust Stage 3 System upgraded (Stock Rims) & ECU tuned using KKT Tiny ECU.
Actual on-road tested 0-120km/h result & comparison
How about fuel consumption?
Exhaust sound and dB level after modification
Honda Jazz GK 1.5L L15A engine 2015
Honda Jazz GK 1.5L L15A engine 2016
Honda Jazz GK 1.5L L15A engine 2017
Honda Jazz GK 1.5L L15A engine 2018
Honda Jazz GK 1.5L L15A engine 2019
Honda Jazz GK 1.5L L15A engine 2020