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The old and popular eight-valve XU7 engine can be given a new life with a reasonable cost and modified accessories of the newer XU+ engine, and among these modifications, we can mention the modification of the gas valve and air manifold, which play an important role in increasing the power and torque. Midi has more horsepower, and with reasonable cost and factory accessories, it can easily have a more suitable torque graph, but how will the installation of these parts be and how will it provide power? Stay with us. Do you think the old X-U-Seven engine is worth tuning? Stronger, faster, safer with SRP