COBB TUNING 20G TURBOCHARGER: 2015+ SUBARU WRX STIE1120G DESCRIPTION The COBB 20G is an ideal turbo upgrade for those looking to increase the top end power of their STI while maintaining low and mid range response. Capable of producing 400hp and retaining excellent throttle response, the COBB 20G is a perfect turbocharger for street or track use! Single Scroll exhaust housing Offset compressor outlet for more room around the throttle by wire connector Sleeve bearing turbo with 360 degree thrust