AMR's CXR500 Bolt-On Turbo for the WRX and STI is an awesome turbo that is sure to put a smile on your face. The CXR500 comes with a ported, 8cm exhaust housing and a ported, custom-cast compressor housing that that is designed to fit in the engine bay better than any other turbo of this size (no more grinding or busting out a BFH to make something fit). The CXR500 comes equipped with a 44lb compressor wheel. With the extreme porting on the compressor housing and thermal coated turbine housing, along with the large turbine wheel, gives the CXR500 a flow rate of 47 lb/min. This seemingly small increase in airflow allows the CXR500 to pull hard on top end of the rev-range without any loss of power on low and mid range. The CXR500 is most efficient when run between 20psi & 24psi and will produce 350-430whp when fully tuned with all supporting modifications. AMR backs their CXR500 with a 90-day limited warranty.