Modified 4.6l 4V-NA vs NOS Nitrous (100hp) - After removing the FR500 intake, we had one final test to run. A few years back, NOS had shipped a set of nozzles that combined the nitrous and fuel in unique fittings designed to house the factory injectors. Given the limited amount of nitrous we used on this test, the same power gains could be expected from a simple single-fogger nozzle placed in the throttle body or air intake, but we liked the even distribution offered by the Nozzle setup. After installation of the Nozzles on the ported stock intake, we ran with jetting to provide an additional 100 hp. The result was a jump from 435 hp to 547 hp, with torque up from 409 lb-ft to 526 lb-ft.