Loss of Mileage after Intake install

JLarson

I suspect the difference in mileage is partly based on the year of the car. Later year Z cars are better able to adjust fuel to match increased airflow. In an earlier vehicle, chances are good a CAI would lean things out, somewhat improving mpg. My mpg definitely dropped after adding power mods. I still get decent fuel economy at 65 mph (27-30 mpg), but everywhere else in the power band it's much lower (but 20% more power, which consoles me).

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2014 370z Touring Sport Magma Red MT // BP Single Turbo 6467 // 63mm TB's // Z1 Ported Upper Mani // RJM Pedal // Zspeed Stage 3 Clutch // 526 WHP, 451 WTQ
2006 350z (Sold) // 1990 300zx (Sold) // 1985 300zx 2+2 (Sold)