This WRX intercooler endured rigorous testing, showing a 35?F temperature drop as well as a 15 whp and 8 wtq bolt-on power increase for our test vehicle equipped with a Mishimoto 2015-2021 Subaru WRX downpipe and stage 2 EcuTek tune. Installation is simple, requires no modification to any parts in the engine bay, and can be completed in under 1 hour. Included with this top-mount intercooler is Mishimoto's innovative 2015-2021 Subaru WRX charge-pipe, utilizing a one-piece construction without the need for several couplers and clamps. An application-specific air splitter is included with the top-mount intercooler to help divert the maximum amount of air into your Mishimoto 2015-2021 Subaru WRX top-mount intercooler. The WRX top-mount intercooler kit also includes a new charge-pipe to intercooler hose, an intercooler to throttle body hose, and a new bypass valve hoses. These 2015-2021 Subaru WRX parts negate the need to gather supplies for installation, and they ensure years of reliable servi