The Best Infiniti Performance Parts Available in Nashville

Understanding Infiniti Performance Potential

Nashville has become a surprising hub for automotive performance, and Infiniti owners are taking full advantage. Whether you drive a G37, Q50, Q60, or a QX crossover, the aftermarket scene offers proven upgrades that transform these luxury vehicles into true performance machines. The key is knowing which parts deliver real gains without compromising daily drivability. This guide covers the best Infiniti performance parts available in Nashville, where to find them, and how to plan a balanced build.

Why Infiniti Responds Well to Upgrades

Infiniti’s powertrains—especially the VQ-series V6 engines and the newer VR-series twin-turbos—are built with robust internals that handle increased boost and higher revs. The chassis, shared with Nissan’s performance models, is already well-balanced. With the right cold air intake, exhaust system, and ECU tuning, a naturally aspirated VQ can gain 20–30 horsepower at the wheels. The VR30 engines in the Q50 and Q60 respond even more dramatically: a simple tune and bolt-ons can push output past 400 horsepower. The aftermarket ecosystem is mature, so parts are tested and widely available.

Cold Air Intakes: The Foundation of More Power

The first upgrade many Infiniti owners choose is a cold air intake. It replaces the restrictive factory airbox with a free-flowing filter and smooth intake pipes, reducing intake air temperatures and allowing the engine to breathe. In Nashville’s hot summers, cooler intake air is especially valuable because it reduces the risk of knock and allows the ECU to advance timing. Popular brands include:

Injen – Their SP series intakes are known for heat shield design and dyno-verified gains of 8–12 horsepower.
K&N – Offers a high-flow drop-in filter for a minimalist upgrade, plus full cold air kits for most models.
Z1 Motorsports – A dedicated Nissan/Infiniti specialist with intakes that include velocity stacks and larger MAF housings for tuned cars.

Local shops like Nashville Performance Auto stock these brands and can install them in under two hours. Expect to pay $250–$450 for a quality intake.

What to Look for in an Infiniti Cold Air Intake

Ensure the kit includes a shield or enclosed box to block engine bay heat. Open cone filters in the engine bay often lose power in stop-and-go traffic because they suck in hot air. Look for kits that relocate the filter behind the headlight or inside the fender. Also check that the kit includes a port for the factory MAF sensor and that the filter is washable. Avoid cheap knockoffs that cause check engine lights from turbulent airflow.

Performance Exhaust Systems: Sound and Flow

A cat-back exhaust system improves exhaust flow after the catalytic converters, reducing backpressure and freeing up top-end horsepower. It also gives your Infiniti a more aggressive tone without being obnoxious on the highway. Nashville has sound ordinances, but most quality cat-backs include resonators and mufflers that keep noise levels street-legal while still turning heads. Top choices:

Borla – Their S-Type and ATAK systems offer a deep, refined sound with polished stainless steel construction.
MagnaFlow – Known for a slightly more mellow tone and excellent fitment; they use straight-through perforated core mufflers.
Fast Intentions – A boutique brand popular in the G37 community, with options for resonated or non-resonated mid-pipes.
ARK Performance – Their Grip exhaust uses a unique split muffler design that minimizes drone.

Installation at a shop like Nashville Performance Auto runs $150–$300, and the system itself costs $800–$1,500. For maximum gain, combine an exhaust with an Infiniti owner’s forum guide on test pipes or high-flow cats.

Exhaust Tips for Daily Driving

If you drive your Infiniti daily in Nashville traffic, avoid straight-pipe setups. They induce drone at cruising speeds and can attract unwanted attention. A 2.5-inch or 3-inch mandrel-bent system with at least one resonator keeps the sound clean. Consider valved exhaust systems that let you switch between quiet and loud modes via a remote – available from brands like AAM Competition.

ECU Tuning: Unlocking Hidden Horsepower

The factory ECU calibration leaves performance on the table for emissions, fuel economy, and safety margins. Custom ECU tuning adjusts air/fuel ratios, ignition timing, throttle response, and (for turbo models) boost pressure. For Infinitis, two main tuning methods exist:

ECU Flash/Remap – Overwrites the factory software. This is the best option for heavily modified cars. Local tuners in Nashville like Nashville ECU Tuning specialize in Ecutek software.
Piggyback Tuners – Devices like the JB4 or Cobb Accessport (with OBD-II flash) are easier for DIY users but offer less granular control.

Expect 25–35 horsepower gains on a naturally aspirated Infiniti with bolt-ons, and 60–100 horsepower gains on a turbo VR30 with a downpipe and tune. Tuning usually costs $500–$1,000 including the software license. Do not attempt tuning without a wideband oxygen sensor and a knowledgeable tuner; the VQ and VR engines are sensitive to knock.

Safety Tips for Tuning in Nashville Climate

Nashville’s summer heat and humidity increase the risk of detonation. Ensure your tuner uses an intercooler upgrade (for turbo cars) and pulls timing in high intake air temperatures. Consider a flex fuel sensor and ethanol blend (E30–E50) for cooler combustion on turbo builds. Many Nashville tuners use Ecutek’s Sync function for remote tuning, which is convenient for out-of-state shop support.

Suspension Upgrades: Handling and Ride Quality

Infiniti sedans and coupes offer a great platform from the factory, but lowering springs, coilovers, and sway bars reduce body roll and improve turn-in response. The right suspension setup also lowers the center of gravity for better stability at speed. Nashville roads have their share of potholes, so adjustable dampers are recommended.

Tein Flex Z Coilovers – Great value with 16-way dampening adjustment and a 32-step rebound adjustment. Ride quality is firm but compliant.
Eibach Pro-Kit Springs – Lower the car about 1.3 inches while maintaining near-stock ride smoothness. Pair with Koni or Bilstein shocks for best results.
Swift Springs Spec-R – Progressive rate springs that offer comfort around town and stiffer compression during hard cornering.
Hotchkis Sway Bars – Reduce lean dramatically; adjustable end links allow fine-tuning.

Installation at a shop like Nashville Performance Auto typically costs $400–$700 for springs, and $800–$1,200 for coilovers including alignment. Always get a four-wheel alignment after suspension work.

Choosing Between Springs and Coilovers

If you drive your Infiniti as a daily and want a mild drop with better handling, lowering springs are sufficient. For track days or aggressive street driving, coilovers give you height adjustability, damper control, and often camber plates. Keep in mind that coilovers require periodic maintenance – some Nashville shops offer rebuild services for Tein and KW.

Brake Upgrades: Matching Stopping Power to Horsepower

As you increase power, your stock brakes will fade faster on canyon roads or during spirited driving. Upgraded brake pads, rotors, and calipers reduce stopping distances and pedal feel. Nashville’s hilly terrain (e.g., Natchez Trace) demands consistent braking performance.

Brembo GT Kits – Big brake kits with 6-piston front calipers and slotted rotors. They dramatically improve fade resistance.
StopTech SportStop Drilled & Slotted Rotors – A cost-effective upgrade over OEM, paired with Street Performance pads.
Hawk HPS 5.0 Pads – Low dust, street-friendly pads that offer better bite than factory pads without noise.
Motul RBF 600 Brake Fluid – Higher boiling point to prevent fluid fade during hard braking.

Many Nashville shops can install a full brake system in a few hours. Budget $300–$600 for pads and rotors, and $1,500–$3,000 for a Brembo kit. Always bed in new pads properly to ensure even pad transfer.

Where to Buy Infiniti Performance Parts in Nashville

Nashville has several reliable sources for Infiniti performance parts, both local and online with fast shipping.

Local Brick-and-Mortar Shops

Nashville Performance Auto – 615-555-0102 (example). They stock Injen, Borla, Eibach, Brembo, and offer installation. They also carry fluids and tools.
Infiniti of Nashville – Official dealership parts department. Good for OEM gaskets, bolts, and factory performance upgrades like the Infiniti Performance Line options.
AutoZone / O’Reilly Auto Parts – For basic consumables like oil filters, brake pads, and fluids. They can order some performance parts through their distribution system.
Nashville Japanese Motorworks – Specializes in Nissan/Infiniti performance builds. They can source rare JDM parts and offer custom fabrication.

Online Retailers with Nashville Deals

Z1 Motorsports – Based in Georgia but ships quickly to Nashville. They are a go-to for Nissan/Infiniti intakes, exhausts, and tuning hardware.
Concept Z Performance – Excellent customer service, free shipping on many orders, and they often have discount codes.
Summit Racing – Huge inventory with a Nashville distribution center that offers same-day pickup for many products.
CARiD – Wide selection with user reviews and fitment guides; some parts ship from Tennessee warehouses.

Model-Specific Recommendations for Nashville Infiniti Owners

Different Infiniti models have unique aftermarket needs. Here are targeted builds for common Nashville vehicles:

Infiniti G37 / Q40

The G37’s VQ37VHR engine is naturally aspirated and loves free-flowing intakes, high-flow cats, and a tune. A popular budget build: Stillen Gen 3 intake, Motordyne Shockwave exhaust, and an Ecutek tune for 330+ wheel horsepower. Upgrade suspension with Tein Flex Z coilovers and add Hotchkis sway bars. For the G37S, the factory Brembo brakes are sufficient with better pads and fluid.

Infiniti Q50 / Q60 (VR30 Twin-Turbo)

These twin-turbo V6 engines are the new performance stars. A simple downpipe and tune can break 450 wheel horsepower. Best first upgrades: AMS Performance heat exchanger (for intercooler capacity), JB4 or Ecutek tune, and a cat-back exhaust. The stock intakes are decent, but a true cold air kit like the Injen Evolution adds response. For handling, the Q50’s weight demands stiffer suspension: the KW V3 coilovers are an excellent choice.

Infiniti EX / FX / QX70

SUV crossovers can also benefit from performance parts. Cold air intakes and exhaust systems are available for these platforms, and lowering springs or coilovers reduce body roll. Stillen makes a supercharger kit for the older FX50, but for daily driving, focus on brake upgrades and sway bars. Nashville shops can install a complete kit on a QX70 in a day.

Installation and Maintenance Tips for Longevity

Installing performance parts on your Infiniti is rewarding, but poor installation or lack of maintenance can cause issues. Follow these guidelines:

Use proper torque specifications – Many DIY failures come from overtightened bolts. Invest in a torque wrench and lookup factory specs.
Upgrade engine mounts – More power can cause wheel hop and drivetrain slop. Polyurethane motor mounts from Z1 or Powerflex reduce unwanted motion.
Replace spark plugs – If tuning, consider colder spark plugs (one step colder) to prevent pre-ignition. NGK LFR7AIX for VQ engines.
Monitor oil temperatures – Infinitis run hot during track use. An oil cooler kit is a wise investment for regular hard driving in Nashville summers.
Check for Nashville-specific wear – Potholes can bend lower control arms; inspect suspension components after winter.

Nashville Tuning Culture and Events

The local car scene is active. Groups like Nashville Import Club host meetups and track days at the Nashville Superspeedway. Many Infiniti owners gather at the Music City Cars & Coffee events. These are excellent places to see others’ builds, get advice, and find local shops. You can also connect on forums like MyG37.com or Q50Forum.com for Nashville-specific threads.

Final Thought: Build with Purpose

The best Infiniti performance parts in Nashville are those that align with your driving goals. A well-rounded build that improves intake, exhaust, tuning, suspension, and braking will outperform a car that only has a single big power mod. Plan your budget, choose reputable brands, and consult with experienced local tuners. With Nashville’s resources, you can build an Infiniti that surprises supercars on the interstate and handles the Natchez Trace with confidence.