FUEL AND AIR
After the LBMC had a strong platform for power from the ground up, we upped the stakes by adding more fuel and air to the equation. The first step was installing a set of Spek gauges so we could keep tabs on our engine vitals. Next were larger injectors. We chose 90 hp injector nozzles from Dynomite Diesel Performance in Monroe, WA. DDP uses extrude honing technology on their nozzles, which provides better fuel atomization than stock Bosch injectors, while still providing higher fuel volume. The 90 hp nozzles are not quite as fuel efficient as the company's 50 hp nozzles, but we need the added fuel to push the larger turbos.
After we added the injectors, we had Industrial Injection in Salt Lake City, UT, modify our CP3 pump for a 30 percent fuel increase. They also added dual-feed line from the CP3 pump to the common fuel rail to keep up with rail pressure demand under heavy fueling.
Next came a high volume lift pump from BD. The Flow-Max pump provides a full 150 gallons per hour, replacing the need for the factory in-tank lift pump, which could not supply the CP3 with enough fuel.
After our fuel upgrades, it was time for a set of turbos that would compress enough air to utilize all that fuel. For this we chose BD's R700 compound turbo kit, which uses a combination of the Borg Warner S300 and S400 turbos with a unique combination of compressor wheels, turbines and housings that BD's engineers hand-picked for this application. This fuel and air combo will quickly and easily provide 60 psi boost pressure to the engine before the wastegate on the secondary turbo will open. Love is a strong word and shouldn't be used lightly. Having qualified this statement, we LOVE these turbos. With this fuel setup, they are easy to light, and clean up the smoke quickly, utilizing all of our available fuel, yet still keeping EGTs low. The power curve is very linear and smooth. When you roll on the throttle, it's like someone flipped the switch on a giant electric motor. Torque instantly hits the ground, you sink back in the seat, and the truck shoots forward until you take your foot off the throttle. Our favorite part about these turbos is the fact that after tens of thousands of miles, we haven't had to touch them. The fit on this kit is A1, top quality. This is refreshing when twin turbo kits typically have a reputation for being high maintenance and less reliable than single turbo applications. Not one loose bolt, no boost tube leaks and no exhaust leaks. Hats off to you on this R700 kit, BD.