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Infiniti G35/Nissan 350Z VQ35/VQ40 EcuTek Tune

$380.00 USD
$380.00 USD
Shipping calculated at checkout

Elevate your Infiniti G35 or Nissan 350Z’s driving experience with Racebox’s EcuTek tuning solution, tailored for VQ35 and VQ40 engines. Our expert calibration enhances engine performance, delivering increased horsepower and torque for a more dynamic ride. Experience improved throttle response and customizable tuning maps that adapt to your driving style, whether on daily commutes or spirited drives.

Key Features:
• Enhanced Power Output: Achieve significant gains in horsepower and torque, maximizing your engine’s potential.
• Improved Throttle Response: Enjoy quicker acceleration and a more responsive driving experience.
• Customizable Tuning Maps: Select from multiple performance maps to suit various driving conditions and preferences.
• Optimized Fuel Efficiency: Benefit from improved fuel consumption without compromising performance.
• Professional Support: Access expert assistance and regular updates to ensure your tune remains current and effective.

Racebox’s EcuTek tune integrates seamlessly with your vehicle’s existing systems, providing a reliable and efficient performance upgrade.

One Stop Shop Get it all done in one place!
The BEST Service 24-48 hour responses
The FASTEST Cars Many platform records

The Racemode Advantage

The Racemode Advantage: An Overview

Tailored Performance Calibration for VQ37 platforms: Racebox specializes in custom performance calibrations designed specifically for your VQ, taking into account your unique modification list and preferred fueling options, including 91+ Octane and E-85 compatible fuel systems. For those using Racebox OTS (Off-The-Shelf) calibrations, your modifications are considered within the bounds of pump gasoline (non-ethanol fuels). Our meticulous engine tuning ensures optimal performance, maintaining OEM-level drivability and reliability.

Benefits of Racemode Tuning

  • Enhanced Throttle Responsiveness and Drivability: Leveraging our extensive experience with hundreds of VQ37 tunes, we've developed a calibration that boosts throttle responsiveness and reduces lag inherent in stock ECM mappings.
  • Rigorously Tested: Our tuning strategies have been honed over years of experience. Through a combination of dyno testing and real-world scenarios, we ensure our calibrations meet the driving conditions our customers will face, enhancing performance and reliability continuously.
  • Precision Ignition Timing for High Octane Fuel: By optimizing engine timing for high-quality fuel, we extract maximum power safely and efficiently.
  • OEM Safety Limiters Retained: We maintain and enhance OEM fail-safes within the ECU calibration, closely monitoring operation parameters to ensure drivetrain reliability, adjusting fail-safes to protect against the increased power output.

Additional Features

  • Speed Limiter Removal: The ECU's vehicle speed limiter is deactivated, allowing for higher top speeds.
  • Improved Fuel Efficiency: Our calibrations optimize fuel adjustments, potentially improving fuel efficiency with aftermarket intake and exhaust systems. Note: Increased throttle use may offset these gains.

Tune at Home with ECUTEK Phone Flash

Convenience at Your Fingertips: With ECUTEK's Phone Flash software, tune your vehicle using just your smartphone from the comfort of your home. We provide comprehensive instructions and data logging support for our custom tuning services. This feature allows the majority of our remotely tuned customers to enjoy the benefits of Racemode tuning without the need to visit a shop or dyno.

Racebox is committed to delivering performance enhancements that respect your vehicle's integrity while pushing its capabilities to new heights. Enjoy the thrill of optimized performance with the peace of mind that comes from professional, experienced tuning.

Tune at Home: A Quick How-To

When you purchase a Racemode tune, you get access to our world-class customer service which includes comprehensive instructions on setting up your vehicle interface when it is received and getting started.

We have both a written set of instructions and full featured video to go over everything from setting up to flashing to data-logging.

Refunds and Returns

The sale of any RACEBOX Racemode Tuning product or service is final at the moment of checkout. RACEBOX will adhere to an “all sales are final” policy unless there are circumstances that, in the sole and absolute discretion of RACEBOX, make a return or refund appropriate.

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Infiniti G35/Nissan 350Z VQ35/VQ40 EcuTek Tune

Tune Type: OTS (Gasoline ONLY)

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What Makes Racebox Special

Our humble beginnings

Racebox was conceptualized when our founder Hussain Boxwala was trying to purchase a tune for his VR30 powered Q50 back in 2018. When speaking with tuners, he realized that there was a need for clear communication, honest work, and prompt response service. In an effort to create the best customer experience possible, Hussain set out to develop his first Q50 calibration on his personal vehicle.

100% Honest Marketing

Our main goal is to provide customers with the most realistic expectations for their vehicles. This means we'll never lie about the mods on our shop cars, the times they run, or the power they make. We aim to always provide the most information possible, like listing ambient conditions and correction factors on all dyno charts. We're not here to push an agenda, we're here to help you achieve your goals.

World-class Customer Support

There's nothing more frustrating than waiting weeks for a reply from your tuner, which is why we'll never take longer than 48 hours to get back to you. Often times, it's same day replies. We know you value your time, and so do we. We're reachable via phone, text, or e-mail, and we'll never leave you hanging :)

Racemode Tuning FAQ

We've curated a list of the most common questions y'all have when reaching out to us. Please see the cards to the right for some of the more frequent ones.

What is VQ35/VQ40 Racemode Tuning?

VQ35/VQ40 Racemode Tuning isn’t just a tune—it’s a transformation. Our proprietary calibration takes your Infiniti G35 or Nissan 350Z to new heights. Whether you’re looking for sharper throttle response, more torque, or big horsepower gains, this is the upgrade that turns your car into a true performer on the road or the track.

Is VQ35/VQ40 Racemode Tuning safe for my ride?

Safe? Absolutely. Reliable? 100%. We don’t just throw numbers at the dyno and call it a day—we fine-tune your setup to perform like a beast without sacrificing your engine’s health. Reliability and power go hand-in-hand when Racebox is behind the wheel.

Which vehicles can run VQ35/VQ40 Racemode Tuning?

If it’s powered by a VQ35 or VQ40, it’s good to go. That means Infiniti G35, Nissan 350Z, and other vehicles equipped with these engines are ready for Racemode Tuning.

What kind of power are we talking here?

For a VQ35/VQ40, expect 20-40 WHP and 30-50 WTQ gains on an OTS tune for stock or lightly modified setups. With a custom tune and supporting mods like headers, intakes, or exhaust systems, you’re looking at even bigger numbers.

What’s the difference between OTS and Custom Tunes for the VQ35/VQ40 engine?

The difference comes down to how personalized and aggressive you want your tune.

• OTS (Off-The-Shelf) Tunes:

• Pre-configured maps designed for quick installation.

• Perfect for stock or lightly modified setups (e.g., intake or cat-back exhaust).

• Includes two maps (daily and sport) with basic launch control.

• No revisions—just flash and go.

• Custom Tunes:

• Tailored specifically to your mods and performance goals.

• Supports headers, cams, forced induction, or ethanol blends.

• Includes map switching for high-boost/low-boost setups and advanced launch control.

• Requires data logging and multiple revisions for precision optimization.

Which tune should I choose for my VQ35/VQ40?

It depends on your goals:

• If you’re running stock or minor upgrades, an OTS tune is quick, easy, and effective.

• If you’ve got advanced mods or are chasing big gains, a custom tune is the way to go.

Can Racemode handle forced induction setups like turbos or superchargers?

Absolutely. Whether you’re running a turbo or supercharger, our Custom Tunes will make sure your forced induction setup performs safely and delivers maximum power.

Can Racemode handle ethanol blends like E30 or E85?

Hell yes. If you’re running E30, a flex-fuel kit gets you there. For E85 (anything over E50), we’ll need to upgrade your HPFP, LPFP, and slap on that flex-fuel kit. Ethanol is the cheat code for unlocking next-level power, and we tune it like pros.

Does the tune come with launch control and map switching?

Of course. Custom tunes include fully adjustable launch control and map switching. You can toggle between daily driving, sport mode, or track mode depending on your needs.

Do I have to visit the shop for Racemode Tuning?

Nope. You could be in Houston or halfway across the globe—we’ve got you covered. All you need is an EcuTek Bluetooth module, a smartphone, and an internet connection. We’ll guide you through every step remotely.

What do I need to get started with Racemode Tuning?

Here’s your checklist:

• EcuTek Bluetooth module.

• A solid smartphone or laptop (Windows OS for advanced options).

• A stable internet connection.

• Any mods already installed before the first flash.

How long does the tuning process take?

On average, 6–10 business days. How fast we finish depends on your response time with data logs and overall tuning volume. Don’t ghost us, and we’ll get your car ripping ASAP.

What if I run into issues during the process?

Problems? Not a chance—just solutions. Call us at (832) 786-9038 or reply to your tuner’s email thread with your logs, DTC codes, or any details. We’ll troubleshoot and get you back on track.

Can I tweak the tune later?

While we don’t include lifetime updates for modifications, you can always pay for a retune if your setup changes. If the changes are minor and within the first month—like adding certain mods we already support—we’ll update it for free. Just reach out, and we’ll let you know what qualifies.

Will this void my warranty?

It depends on your dealership, and let’s face it, some are chill, and some aren’t. They’ll need to prove the tune caused an issue to void your warranty. Pro tip: we give you a stock file to flash back before you roll into the service bay. Talk to your advisor and play it smart.

How do I keep my VQ35/VQ40 running strong after tuning?

Maintenance is everything. Stick to regular oil changes (high-quality synthetic only), replace spark plugs regularly, and monitor fluids like coolant and transmission oil. For high-power setups, consider upgrading your cooling system or adding an oil cooler.

How fast do you respond?

Fast. We aim for a 24–48 hour turnaround during business days. Custom tuning often sees daily revisions unless we’re swamped, in which case it’s closer to 48. You’ll never be left hanging.

What mods do I need to run Racemode Tuning?

None, technically. Racemode Tuning delivers solid power gains even on stock setups. But if you’re looking for maximum results, start with intake, exhaust, and headers. Supporting mods open the door for bigger power gains.

What if I’m new to the tuning game?

First things first: get your car up to date with basic maintenance (fluids, spark plugs, filters). Once that’s dialed in, start with the essentials—heat exchanger, exhaust, and intake. Call us if you need advice—we’ll steer you right.

What if I’m not local to Houston?

No big deal. We’ve tuned thousands of cars worldwide without ever meeting the drivers in person. As long as you’ve got the gear (Bluetooth module, phone), we can bring Racebox-level performance to you.

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