2005 Pontiac GTO Nitrous Kit - Gen IV Juice

Spraying Our LS2 With NX's One Piece MAF System

Rick Jensen Jan 1, 2006 0 Comment(s)

Step By Step

Our weapon of choice to infuse the LS2 GTO with huge power is NX's 20110-10 Mass Air Housing Kit with a 10-pound bottle ($899). It includes the billet 60601 aluminum MAF housing with integral lifetime warranty solenoids, a wiring harness, a TPAS module, a variety of jets that can supply 35-200 horses, and other necessary installation hardware. We also ordered up a GENX-2 accessory kit ($440 jobber) that included the previously mentioned fuel safety switch, a fully automatic bottle heater, a nitrous pressure gauge, a blow-down tube and pipe-away fitting, and a purge valve. The FJO Dual Window Switch came complete with instructions and a software CD--more on it later. NX also sent us its 15896 switch assembly and 15531 2 1/16 nitrous gauge. Due to a pressing story deadline and a race with an LS1, the final switch and gauge installation will be done at a later date.

So far we're having a blast with our '05 Goat's LS2 mill. Even though it doesn't tolerate heat like its LS1/LS6 siblings, 340-plus rear-wheel horsepower from 364 ci--bone-stock--is no joke.

There are a lot of LS2 bolt-ons waiting in the wings, but for this special nitrous-oxide issue, we wanted to juice up our stock Gen IV. Since tuning the E40-powered LS2 isn't quite an exact science yet, we weren't looking for a huge power increase. We wanted a straightforward system that bolted up, could add 100 rwhp with no other changes, and didn't require cracking into the LS2's brains to produce that power.

Lucky for us, Wichita Falls, Texas-based Nitrous Express had a solution: its newly released LS2 MAF wet system. Ricky Stancik of NX explains, "This kit centers around an aluminum ring with integrated solenoids that attaches to the stock MAF, injecting the fuel and nitrous through the intake tract and into the engine." It is barely visible and about as non-invasive as a nitrous system can get.

We wanted safety with all of that new power too, and one of the components in NX's GENX-2 kit is an adjustable fuel pressure safety switch (PN 15718) that will protect the motor if a lean condition arises. Another important addition to our six-speed GTO is the FJO Racing Products two-stage progressive switch, sold through NX. Using its window switch functions, we'll set the nitrous window between 3000 and 6400 rpm, hit the jug, then bang gears with no fear.

The plan is to perform the install at Chris Werner's shop, dyno test at nearby TT Performance with 100-horse jets, and then go head-to-head with Werner's juiced Firebird at E-town. Let's get wrenchin'.

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