The APR Stage I ECU Upgrade gives you higher peak numbers of 458 HP/330 FT-LBS on 93 (R+M)/2 octane and up to 466 HP/335 FT-LBS on 100 (R+M)/2 octane race fuel. As much as 18 HP and 16 FT-LBS of torque are available through the power band. APR’s ECU Upgrade is the best power per dollar modification for the new 4.2L FSI V8 and gives it just the extra edge these cars lack from the factory without pushing the limits. With factory-like smoothness and drivability, APR’s ECU upgrade will fill the void in an otherwise excellent car. Read more about other features included with the ECU Upgrade!