2008-10 6.4L Ford Powerstroke EGT Control - Snow Performance Water/Methanol Injection Keeping your exhaust gas temperatures (EGT) in check is one of the biggest challenges that every diesel enthusiast with a Ford 6.4LPowerstroke faces. Snow Performance has the solution. Snow Performance water/methanol injection systems for diesel trucks not only helps to cool EGT's but also adds power at the same time.The latest from Snow is the Diesel Stage 3 MPG-MAX™ Boost Cooler. It is the only system proven to increase fuel economy in all load states – empty or while towing. Special mapping and the most sophisticated 2D digital controller available result in 1-3 MPG increases!