and vibrations causing solder joints and components to fail in early build models; mostly in the power supply itself. The FICM multiplies the voltage in the fuel injector circuit from 12 to 48-50 volts to fire the injectors. Low voltage can eventually cause damage to the fuel injectors. Lawsuits and litigation Many 6.0 owners who bought their truck new have received class action lawsuit payments. Some owners have opted out of the class action lawsuit and went straight to a fraud case: one example is Charles Margeson of California, who was awarded $214,537.34 plus legal fees ($72,564.04 was for repayment of his 2006 F-350). Margeson, along with 5 other owners who opted out of the class action lawsuits, have been awarded over US$10 million. 6.4 Power Stroke The 6.4L Power Stroke was introduced for MY2008 and was the first engine introduced to the light truck market that utilized dual turbochargers directly from the factory. Additionally, this was the first Power Stroke to use a diesel particulate filter (DPF) to reduce particulate matter emissions from the exhaust. The new DPF and active regeneration system greatly hindered fuel economy and the engine was ultimately retired after MY2010 and replaced by the 6.7L Power Stroke built in-house by Ford. While warranty claims began to show a level of unreliability similar to the previous 6.0L Power Stroke, the 6.4L Power Stroke has proved to be capable of handling elevated boost levels needed to generate high horsepower and torque. The engine has a bore and stroke, resulting in a total calculated displacement of . Despite having to meet emission regulations, the engine was able to increase horsepower ratings to and torque to at the flywheel. Horsepower and torque are achieved at 3,000 rpm and 2,000 rpm respectively. It also features a compound VGT turbo system. Air enters the low-pressure turbo (the larger of the two) and is fed into the high-pressure turbo (the smaller of the two), then is directed into the engine or intercooler. This system is designed to result in reduced turbo lag when accelerating from a stop. The series-turbo system is set up to provide a better throttle response while in motion to give a power flow more like a naturally aspirated engine. The 6.4 L also has a DPF and dual EGR coolers which are capable of reducing exhaust gas temps by up to 1,000 degrees before they reach the EGR