The APR Stage 3 IS20 ECU upgrade is the ultimate upgrade for the Polo GTI 1.8 TSI! This upgrade requires the factory IS20 turbocharger found on the MK7 GTI and similar vehicles, a race dp, intake and intercooler and produces 302-318 HP with 325-330 FT-LBS of torque. Gains as high as 124-130 HP and 109-118 FT-LBS of torque are available throughout the power band. Learn more by visiting our product page.