As you probably know, the 6.7-Liter Power Stroke in recent years has struggled with failing CP4 high-pressure pumps. Some will fail and send shrapnel and debris into the later parts of the fuel system compromising those hard, expensive parts; The most important and expensive part being the fuel injectors.
In just the last few hours, S&S Diesel Motorsport sent out a press release letting everyone know that the second generation of their CP4 bypass kits is now available. See below.
Brownstown, IN – S&S Diesel Motorsport, the creator of the original CP4 bypass kit for the 6.7 Power Stroke, is at it again with a much-improved second-generation kit. Since its debut in 2016, the original S&S 6.7 Power Stroke CP4 Bypass Kit has saved thousands of injectors from CP4 debris. In fact, it works so well that it has been copied by multiple opportunists within the aftermarket. Being a company founded by fuel system engineers, S&S Diesel Motorsport has the ability, and responsibility, to offer the best solutions to fuel system problems. While the original bypass kit offers really good protection from a CP4 failure, the last four years have given the S&S engineers plenty of time to discover and eliminate potential problems.
The S&S Diesel Motorsport Gen2 6.7 Power Stroke CP4 Bypass Kit will feature all quick connect lines that will eliminate the need for cutting the factory supply line, which is a debris introduction point, especially if the cut is not thoroughly deburred. It also eliminates the need to use a compression fitting, which is a potential leak point. The OE-style quick connect lines also eliminate any threaded joints that are further leak points and have the potential of generating debris during install.
The main task of both kits is to supply the CP4 case and the metering unit/plungers independently with clean, filtered fuel, and to reroute case fuel back to the tank. There are two major improvements in how the Gen2 kit accomplishes it. The Gen2 fuel supply is split off into two separate lines 25 inches from the CP4, which will eliminate the chance of contaminated case fuel back-feeding into the clean fuel supply line. The original bypass kit splits off within an inch of the pump, and is more susceptible to debris back-feeding if the CP4 failure produces enough debris to clog the fuel return system. The other improvement is what happens to the debris when it exits the pump case. The Gen2 kit features a 2-micron filter in a clear firewall-mounted housing that prevents debris from reaching the tank, fuel lines, and supply pump. It can be visually inspected at a glance for debris, which will give notice to a failed pump. Previously, unfortunate victims of a CP4 failure, with the good fortune of having an original bypass kit installed, would still need to drop the tank and deal with all of the debris created by the failed CP4.
One would think that major improvements would come at a major price increase. Having a clear understanding of common rail diesel fuel systems, and decades of OE engineering experience enabled the engineers at S&S to make improvements without increasing production costs. Thanks to efficient design and use of material, the S&S Diesel Motorsport Gen2 6.7L Power Stroke CP4 Bypass Kit delivers much more value than the original, for an affordable price of $400.00 USD.