BBR's MX-5: More Power, More Fun

Unleash the Potential: The BBR Super 175 MX-5 Upgrade

For many enthusiasts, the Mazda MX-5 (or Eunos Roadster as it's known in its homeland) represents the pinnacle of affordable, lightweight, rear-wheel-drive driving pleasure. However, for those who crave a little more zest from their 1.8-litre NC model (2005-2015), BBR has developed a compelling solution: the Super 175 tuning package. This meticulously engineered upgrade aims to deliver significant performance gains without resorting to forced induction, offering an exceptional blend of power, response, and everyday usability. It’s a package designed for those who want more than just an exhaust and a software tweak, but aren't ready for a full turbo conversion. Let's delve into what makes the BBR MX-5 Super 175 such a sought-after enhancement.

The Heart of the Upgrade: Performance Gains

The headline figures for the BBR Super 175 package are truly impressive for a naturally aspirated upgrade. BBR claims a remarkable gain of 39 bhp and 16 lb.ft of torque. This pushes the power output of the 1.8-litre engine to a genuine 175 bhp at 7300 rpm. But the story doesn't end with peak figures. BBR's diligent development has focused on improving performance across the entire rev range. This means a more responsive engine from lower RPMs, making the car feel significantly quicker and more engaging in daily driving scenarios, whether you're navigating city traffic or enjoying a spirited country road.

Key Components of the Super 175 Package

To achieve these impressive gains, BBR has curated a selection of high-quality components, specifically designed to work in harmony:

• High Flow BBR Panel Air Filter: A simple yet effective upgrade to allow the engine to breathe more freely.
• BBR Stainless Steel 4-into-1 Exhaust Manifold: This is a crucial component for improving exhaust gas scavenging and boosting performance, particularly in conjunction with the other upgrades. It's also designed to be fully MOT compliant.
• BBR High Performance Intake and Exhaust Camshafts: The inclusion of specifically designed camshafts with unique lift and timing profiles is key to unlocking the engine's hidden potential across the rev band.
• BBR StarChip ECU Remap and ProECU Hardware/Software Bundle: The ECU remap is the brain of the operation, optimising fuel and ignition timing to take full advantage of the hardware changes and maximise power and torque safely.
• BBR Badges: Subtle yet distinctive badging for the front wings and bootlid to signify the enhancement.

Beyond the Numbers: Driveability and Flexibility

While the 39 bhp increase is substantial, BBR understands that a car's appeal lies not just in its peak power but also in its overall driveability. The Super 175 package is engineered to enhance throttle response and low-to-mid-range torque. This means the car feels more eager and responsive when you press the accelerator, making overtakes easier and everyday driving more enjoyable. The increased torque, peaking at 144 lb.ft at 4750 rpm, ensures that the car pulls strongly throughout the rev range, providing a more flexible and engaging driving experience.

Retaining the MX-5's Character

A common concern with performance upgrades is the potential loss of the car's original character or the introduction of unwanted noise. BBR has thoughtfully addressed this. The Super 175 package retains the standard exhaust centre section, catalytic converter, and rear silencer. This ensures that the car remains comfortable for long journeys and maintains a level of refinement expected for daily use. The only visual addition to the rear is a set of subtle, 3.5-inch branded stainless steel tailpipe trims, adjustable to suit different bumper configurations on the NC generation MX-5.

MOT Compliance and Fuel Flexibility

One of the significant advantages of the BBR Super 175 package is its full UK MOT emissions compliance. This is largely due to the inclusion of a new, 4-1 long primary catted manifold, ensuring that modified vehicles can still pass the essential emissions tests. Furthermore, the converted cars can run on either 98 or 95 octane fuel, and all the original Mazda electronic fail-safe systems remain fully functional, providing peace of mind for owners.

What About MOT Rules? A Closer Look

Understanding MOT regulations, particularly concerning exhaust systems and catalytic converters, is crucial for any modified vehicle. In the UK:

• Catalytic Converters: These are mandatory for passenger cars first used on or after 1st August 1992, and all passenger cars first used on or after 1st August 1995.
• Eunos Roadsters and Older MX-5s: For imported Eunos Roadsters, or UK/EU registered MX-5s first used *before* 1st August 1992, the catalytic converter may be removable, provided the vehicle was not first used on or after the specified dates.
• Importance of Advising Testers: It's vital to inform your MOT tester about any modifications. Incorrect testing can occur, so ensure your vehicle's registration documents accurately reflect its specification.

The BBR Super 175 package's inclusion of a compliant catted manifold means that, for most MX-5 NC models, passing the MOT emissions test should not be an issue. It's always prudent to confirm with your chosen MOT station.

Optional Enhancements

For those seeking even more performance, BBR offers an optional manifold-back exhaust system. This 2.5-inch stainless steel centre section features an integrated sports catalytic converter and a choice of BBR 'Supersport' or 'Grand Tourer' silencers. This can provide additional performance gains beyond the Super 175 package's core benefits.

Important Notes on Tailpipes

It's worth noting that as of July 2021, BBR no longer includes the 3.5-inch diameter branded tailpipes with the conversion as standard. This change is attributed to the age of vehicles and the increasing difficulty in removing the original equipment (OEM) rear silencer.

The On-Road Experience

On the road, the BBR Super 175 equipped MX-5 feels transformed. The extra torque and power make the car feel significantly quicker and more responsive. The engine pulls more eagerly, the throttle response is sharper, and the overall driving experience is more exciting and engaging. It’s an upgrade that genuinely enhances the already excellent driving dynamics of the MX-5, making it an even more compelling proposition for spirited driving.

Frequently Asked Questions (FAQ)

Conclusion

The BBR Super 175 tuning package is a testament to BBR's expertise in extracting more performance from naturally aspirated engines. For owners of the 1.8-litre Mazda MX-5 NC seeking a tangible and enjoyable boost in power, torque, and responsiveness, without compromising driveability or MOT compliance, this package represents excellent value for money. It transforms an already engaging car into something truly special, offering a more potent and exciting driving experience for everyday use and spirited drives alike.

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