• Owner: Sebastian Juslin
• Dynamometer model: SP Engineering Dynojet Chassis Dyno 248E
• Installation: Scott Tsuneishi
2005 Nissan350z
Pros
Descended from a lineage of Z-cars that began with the Datsun 240Z, the '05 Nissan 350Z is equipped with a naturally aspirated 3.5-liter V-6 engine that produces 287 hp and 274 lb-ft of torque. Taking noticeable styling cues from the late 240Z, this rear-wheel-drive sports car is renowned for its handling and horsepower potential, and is responsive to bolt-on goodies. Over the past few years, thanks to the Z dropping in resale value, it remains one of the top-selling sports coupes in today's used-car market.
Cons
In '05, Nissan introduced to the market the "Rev-Up" VQ35DE engine that delivers 296 hp from the factory. Unfortunately, our 350Z was an earlier model that lacked the higher-horsepower engine.
Notes
Before strapping the Z on the dyno, we performed routine maintenance, including an oil change and spark plug check/replacement, and filled up with a full tank of Shell V-Power. In stock trim, the '05 350Z delivered 232.7 hp and 225.1 lb-ft of torque on the dyno.
Takeda
Short Ram
Intake
Horsepower Gain
• 2,000 to 3,500 rpm range: 0.0 to 2.0
• 3,500 to 5,500 rpm range: 1.0 to 3.0
• 5,500 to redline rpm range: 3.0 to 5.0
Torque Gain
• 2,000 to 3,500 rpm range: 1.0 to 2.0
• 3,500 to 5,500 rpm range: -1.0 to 4.0
• 5,500 to redline rpm range: 5.0 to 2.0
Pros
The Takeda short-ram intake utilizes a Pro Dry S filter, comprised of an oil-free synthetic media with a built-in velocity stack to increase air-flow characteristics. The oil-free synthetic filter used by Takeda eliminates the possibility of damaging/fouling the factory MAF sensor, allegedly associated with oil-charged filters.
Cons
When installing the intake, pay close attention to the step-by-step instruction manual provided with the kit. An incorrect installation or a loose intake clamp will cause the vehicle's MAF sensor to activate "limp mode", causing the engine to lose power.
Parts
Intake, filter, brackets, clamps, hose, nuts and bolts, instructions, license plate frame, decals
Tools
10- and 12mm socket, 10mm open-end wrench, ratchet, extension, screwdriver, pliers
Installation Time
25 minutes
Notes
Dyno charts reveal the Takeda intake improved horsepower throughout the midrange from 4,440 rpm until 6,500 rpm, with a largest gain of 5 hp and 5 lb-ft of torque.
Altered
Atmosphere
Intake Plenum Spacer
Horsepower Gain
• 2,000 to 3,500 rpm range: 2.0 to 3.0
• 3,500 to 5,500 rpm range: 1.0 to 4.0
• 5,500 to redline rpm range: 5.0 to 6.0
Torque Gain
• 2,500 to 3,500 rpm range: 1.0 to 3.0
• 3,500 to 5,500 rpm range: 2.0 to 4.0
• 5,500 to redline rpm range: 2.0 to 5.0
Pros
The Altered Atmosphere Motorsports (AAM) intake spacer is designed to sit between the factory upper and lower plenum, creating additional air flow to the front cylinders, resulting in increased hp and torque. Included with each kit is a modified OEM gasket to ensure proper sealing of the manifold.
Cons
Take necessary precautions when installing the plenum spacer to prevent any foreign objects from falling into the runners. After a few failed attempts at installing the plenum spacer single-handedly, we found the installation to be easier when aided by an assistant holding the upper manifold in place while installing the new gasket and spacer.
Parts
Plenum spacer, extended bolts, modified OEM gasket, strut tower brace spacers, instruction manual
Tools
10-, 12mm socket, 10-, 12mm open-end wrenches, ratchet, extension, screwdrivers, needle-nose pliers
Installation Time
60 minutes
Notes
Dyno results showed a consistent gain of hp and torque from 2,500 rpm to redline, with a peak gain of 4 lb-ft of torque at 4,200 rpm and 6 hp at 6,200 rpm.
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