Outfront Motorsports 575 Complete Cylinder Head Package N25 Heads STi Spark Energy = 115mJ

Spark Energy = 115mJ

The PTE PW46 external wastegate is designed to be a direct fit replacement for other units on the market and is compatible with most aftermarket manual or electronic boost controllers for ease of use

While small OEM turbochargers produce crankcase vacuum under boost

Quick tune (automated fuel tuning)

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Outfront Motorsports 575 Complete Cylinder Head Package N25 Heads STi Spark Energy = 115mJThe Outfront Motorsports 575 Cylinder Heads are the perfect entry level replacement heads if you had a failure requiring you to completely replace heads or if you just want brand new heads outright. These heads are a great option for you basic bolt on engines up to 575 BHP. The Outfront 575 Heads start with new OEM Genuine Subaru head castings. A multi angle valve job is performed as well as a fresh resurface. The heads go through multiple cleaning