Nitrous Outlet N20 System - Juice It Up - Tech
With Nitrous Outlet's New Fifth-Gen Camaro N20 System, 532 Rear-Wheel Horsepower Is Just A Push Of A Button Away
From the February, 2011 issue of GM High-Tech Performance
By Stephen Kim
Photography by Stephen Kim
Momma said not to gloat, but for the lucky SOBs that own LS3-powered Camaros, it's awfully tough to stay modest. With 376 cubic inches, 426 horsepower, and rectangler-port heads that flow an unbelievable 330 cfm from the factory, it's essentially a baby LS7. Considering the astounding naturally aspirated horsepower potential of the LS3, the prospect of bolting on a power-adder may seem rather peculiar. Slide in a bigger cam-and bam-you've got yourself an extra 50-75 hp. Massage those heads, and laying down 500 hp to the wheels is cake. Nevertheless, not everyone cares for a lumpity-lump idle, spinning the stock short-block to 7,500 rpm, and beating on the rod bolts like they owe you money. Turbo and supercharger kits offer an appealing solution, but cost as much as a used LS1 fourth-gen, and take way too long to remove when it's time to head to the dealer for warranty work. (Not that we'd endorse that sort of thing.) As such, good ol' nitrous injection systems are, and always will be, the best bang-for-the-buck horsepower mod in existence, and Nitrous Outlet has developed what could very well be the perfect way to juice an LS3 or L99 Camaro.
Nitrous Outlet's comprehensive...
Nitrous Outlet's comprehensive nitrous system for LS3 and L99 Camaros (PN 00-10119-90-10) includes a 10-pound bottle, oversized solenoids, pre-bent hard lines, steel braided feed line, custom brackets, fuel distribution block, custom wiring harness, TPS activation switch, and an adjustable spray plate. It lists for $725, and is also available with a 15-pound bottle.
By nature, a nitrous system is a rather generic conglomerate of parts, and many kits are engineered to fit dozens of different vehicle platforms. The typical kit includes a bottle, solenoids, one-size-fits-all brackets, a spray nozzle, and various lengths of braided hoses and wires. Minor concerns such as figuring out where and how to mount the parts, cutting and splicing wires, and plumbing everything up are all on the end user. This isn't a huge deal, but it can definitely get irritating, especially when impromptu trips to the hardware store are part of the equation. To help avoid such frustrations, Nitrous Outlet takes a different approach to designing nitrous oxide systems than most manufacturers. The company's goal is to offer turnkey, application-specific nitrous systems that any DIYer can install in a couple of hours. Instead of pawning off a single generic Gen III/IV system on the public, Nitrous Outlet has application-specific kits for the LS1 F-body, LS6 CTS-V, LS2 CTS-V, C5 Corvette, C5 Z06, C6 Corvette, C6 Z06, LS1 GTO, LS2 GTO, and so on and so forth. If there's a late-model GM performance vehicle, Nitrous Outlet probably has a nitrous system designed specifically for it. That kind of attention to detail allows the company to sell kits that include pre-bent hard lines, plug-and-play wiring harnesses, detailed installation instructions, and solenoid and bottle mounting brackets designed specifically for your car.
This comprehensive approach, along with Nitrous Outlet's extensive line of nitrous systems for late-model GM EFI vehicles, has made the company's kits extremely popular with LS enthusiasts. As no surprise, it didn't take long for Nitrous Outlet to design a brand-new system for LS3 and L99 Camaros. To check it out in person, we paid a visit to Nitrous Outlet's Waco, Texas, headquarters and observed as technicians installed the new system on a 2010 Camaro. The procedure went down without a hitch, and a few hours later the fifth-gen was pimpin' another 150 horsepower at the wheels. That's not bad at all for half an afternoon's work.
The first phase of the installation...
The first phase of the installation process involves removing the airbox, engine shroud, and throttle body. After detaching the TPS sensor and removing four 10mm bolts, the throttle body dropped right out.
The nitrous plate bolts between...
The nitrous plate bolts between the throttle body and intake manifold, which moves the throttle body forward by 3/4-inch. Since this causes interference between the actuator motor and the idler pulley, the throttle body must be rotated 180 degrees. This also necessitates lengthening the TPS wire, so the Nitrous Outlet kit includes an extension wire that plugs right into the factory harness.
Nitrous Outlet's billet nitrous...
Nitrous Outlet's billet nitrous plate features multiple nitrous and fuel discharge ports that spray across the throttle-body opening for optimum atomization. It's adjustable up to 400 hp, and should be mounted with its O-ring side facing the throttle body. The throttle body attaches back onto the intake manifold using the longer bolts supplied with the kit. Next, the TPS extension wire was reattached.
Our 2010 Camaro test subject...
Our 2010 Camaro test subject was fitted with an optional purge valve, which screws into the side of the nitrous solenoid. After attaching both the purge valve and nitrous solenoid to the mounting bracket, it was then bolted down to the passenger side of the intake manifold using a factory fuel rail bolt. The bracket has an integrated shield that prevents it from gouging the factory coolant hose.
After slipping the nitrous...
After slipping the nitrous jet into the spray plate, the pre-bent hard line was cinched down between the nitrous solenoid and plate. The solenoid's bottom-discharge design is said to be more efficient than standard side-discharge units. Nitrous Outlet recommends using a .062 nitrous jet for baseline testing.
The fuel solenoid mounts to...
The fuel solenoid mounts to the intake manifold using a bolt on the driver-side fuel rail. The custom brackets are slotted at the solenoid attachment points, which enable the solenoid to be rotated for adjustment if necessary.
The fuel solenoid taps into...
The fuel solenoid taps into the Schrader valve located at the front of the driver-side fuel rail. Using a valve core removal tool, the Schrader valve must be removed before attaching the supplied distribution block to the fuel rail. Next, a hard line was used to connect the distribution block to the fuel solenoid inlet. The block was also fitted with an optional fuel pressure safety switch, which shuts down the nitrous system in the event of pressure loss.
To achieve a 150-horsepower...
To achieve a 150-horsepower shot of juice, Nitrous Outlet recommends matching the .062 nitrous jet with an .038 fuel jet. The larger the jet number, the more fuel or nitrous it will administer. With the fuel jet in place, the hard line was attached between the spray plate and fuel solenoid outlet port.
Another piece of optional...
Another piece of optional equipment on our Camaro test car was Nitrous Outlet's custom bottle bracket. It's built from 1/4-inch aluminum plate, and cinches down to the back of the trunk using existing factory studs. It makes for easy bottle removal, and a superclean install.