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I just brought my Mazda 5 to a custom ECU and transmission remap this morning. Can't believe a good remap will wake everything up and I will never shop again whatever chip / ECU tuning for all my cars. It is not about big HP gain, a 2.0L NA with 5spd auto and heavy body won't have a day and night different. Now the torque curve, the exhaust note, the gear and throttle response are so much quicker and smoother.
I was told to install the stock airbox back into the car, the guy said: "your CAI is not making any hp, you lose so much low end torque."
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