Pedal Commander throttle response controller PC51 for Infiniti - get increased performance or save fuel up to 20% - Available for EX, FX, G, M, Q, and QX ELIMINATE RESPONSE DELAYS in your Infinitis acceleration EASY plug-&-play installation that DOES NOT void your warranty 4 adjustable modes: Eco, City, Sport, Sport+ Improve FUEL ECONOMY up to 20% in your Infiniti with ECO mode PLEASE CHECK DESCRIPTION AND AMAZON FITMENT GUIDE FOR YOUR VEHICLE FITMENT INFO EX25 EX30d EX35 EX37 FX35 FX45 FX30d FX37 FX50 G25 G35 G37 M35 M45 M25 M30d M35h M37 M56 Q30 Q40 Q60 Q70 QX50 QX60 QX70 QX80 Allows you to maximize fuel economy up to 20% over the stock ratings. It also doubles as a valet mode to keep a driver (or even your newly licensed teenager) from being able to accelerate above a certain rate. Many of our customers say that city mode allows the vehicle to accelerate as it should have from the factory. It gives you the response of an &#034;old school&#034; throttle cable, with a 1:1 pedal-to-throttle acceleration ratio. Gives any vehicle the response and acceleration of a race car, allowing you to get up and go when you need to without waiting for the ECU to catch up to your foot. Perfect for spirited driving or on a race track. Please use with caution!