Peugeot 207: Enhancing Performance and Handling

As cars age and become more prevalent in the used car market, a natural interest in tuning and aftermarket parts emerges. The Peugeot 207, a model produced by the French manufacturer between 2006 and 2014, is no exception. Succeeding the popular 206, the 207 was built on the Citroen C3 platform and offered a range of engine options, including several turbocharged variants developed in collaboration with the BMW Group. For those looking to breathe new life into their 207, a wealth of modification possibilities exist, focusing on enhancing both performance and handling.

Peugeot 207 Engine Tuning Options

When considering engine modifications for the Peugeot 207, the turbocharged variants, particularly those developed with BMW, present the most rewarding avenues for improvement. These engines respond exceptionally well to tuning, offering significant gains for the investment. For naturally aspirated engines, a focus on fundamental tuning principles is key.

Engine Variants and Tuning Potential

The Peugeot 207 was available with a variety of engines, each with its own tuning characteristics:

• 1.4 L I4 (petrol)
• 1.4 L I4 VTi (petrol)
• 1.4 L I4 HDi (diesel)
• 1.6 L I4 VTi (petrol)
• 1.6 L I4 (turbo) THP (petrol)
• 1.6 L I4 HDi (diesel)
• 2.0 L I4 HDi (diesel)

The 1.6L THP (Turbo High Pressure) engine, particularly the 175hp variant, is a standout performer and an excellent base for tuning. Even the diesel engines can be significantly transformed with a well-executed remap, often yielding impressive power gains and improved fuel efficiency.

The Power of a Remap

For turbocharged engines, a tune or remap is often the most cost-effective modification, delivering substantial power increases, typically around 30%, along with potential improvements in fuel economy. This process involves reprogramming the engine's control unit (ECU) to optimise fuel delivery, boost pressure, and ignition timing. Alternatives like tuning boxes can also be employed, though a custom remap generally offers superior results.

Mechanical Engine Upgrades

Beyond remapping, more significant mechanical upgrades can further enhance engine performance:

• Fast road camshafts: These are arguably the most impactful mechanical upgrade for naturally aspirated engines, broadening the power band and increasing peak power. However, they require expert installation and can sometimes be challenging to source, though specialist firms can regrind stock camshafts.
• Porting and polishing the cylinder head: This process improves airflow into and out of the engine, making it more efficient and supporting other modifications. Optimising intake and exhaust port shapes to reduce turbulence is crucial for maximising gains.
• Upgraded fuel injectors and fuel pump: As power increases, the standard fuel system may become a bottleneck. Upgrading these components ensures adequate fuel delivery to match the increased air intake.
• Lightened flywheel: Reduces rotational mass, allowing the engine to rev more freely and improving throttle response.

Stages of Tune for the Peugeot 207

Tuning modifications are often categorised into stages, reflecting the complexity and impact of the upgrades:

It's important to maintain a usable power band, especially at lower RPMs, rather than solely focusing on a top-end power spike. For road use, a fast road camshaft is generally preferred over a full competition cam, which can compromise driveability.

Peugeot 207 Suspension and Handling Upgrades

The 207, particularly the Sport and GTi models, offers a good handling platform, but there is always scope for improvement. Enhancing the suspension system is crucial for maximising grip and cornering ability.

Coilovers and Bushings

A set of adjustable coilovers is a popular choice, allowing for precise control over ride height and damping. Lowering the vehicle, typically by around 30-40mm, lowers the centre of gravity and can improve aerodynamics. Replacing worn rubber suspension bushings with stiffer polyurethane items significantly tightens up the suspension, reducing unwanted flex and improving steering response. This also helps to eliminate common suspension noises and rattles.

Suspension Setup Considerations

When upgrading suspension, it's vital to consider the vehicle's overall balance. While track cars can be set up for maximum performance on smooth surfaces, road cars must contend with bumps and imperfections. Overly aggressive lowering can lead to scraping on speed bumps and premature tyre wear due to incorrect suspension geometry. A holistic approach, considering springs, dampers, and anti-roll bars, is essential for optimal results.

Rear Anti-Roll Bar

Fitting a stiffer rear anti-roll bar can significantly reduce body roll during cornering, sharpening the car's turn-in response. Combined with upgraded dampers and a modest drop in ride height, this can transform the 207's handling characteristics.

Peugeot 207 Brake Upgrades

Going faster is only half the equation; stopping effectively is equally important. Upgrading the braking system is a critical safety and performance modification.

Discs and Pads

Larger brake discs increase the surface area for heat dissipation and friction. However, the brake pads play an equally crucial role. For road use, high-friction performance brake pads offer improved stopping power, though they may require higher operating temperatures to be most effective. For a balance of performance and everyday usability, brands like Pagid and Black Diamond offer excellent fast-road pads.

Cooling and Materials

Vented brake discs feature internal channels that enhance airflow and cooling, preventing brake fade during prolonged use. Drilled discs can help keep pads clean and sharp by clearing away brake dust. While larger discs offer greater cooling capacity, ensure they fit within your chosen alloy wheels. If not, upgrading to larger wheels may be necessary.

The Importance of Brake Fluid and Servos

Don't overlook the brake fluid; ensuring it's in good condition and at the correct level is vital. For more significant upgrades, consider a larger brake servo to provide the necessary assistance for the increased braking force.

Peugeot 207 Intake and Exhaust Tuning

Improving the engine's ability to "breathe" is a fundamental aspect of tuning.

Air Intake Modifications

A cotton panel air filter, designed to replace the standard paper filter within the original airbox, is a simple yet effective upgrade that can slightly improve airflow. While full cold air induction kits can enhance engine sound, their performance benefits are often minimal unless the engine is significantly modified to the point where the standard airbox becomes a restriction. For diesel engines, intake and exhaust modifications typically yield less significant gains as Peugeot already uses relatively free-flowing components.

Exhaust Upgrades

A sports exhaust system can improve exhaust gas flow, potentially releasing a few extra horsepower. However, it's important not to go too large with the exhaust bore diameter, as this can reduce exhaust gas velocity and negatively impact low-end torque. A bore size between 1.5 and 2.0 inches is generally recommended for optimal results on most 207 variants.

Peugeot 207 Weight Reduction

Reducing a vehicle's weight has a direct impact on acceleration, braking, and handling. While stripping out a daily driver completely is impractical, several strategies can contribute to significant weight savings.

Strategic Weight Removal

Consider removing non-essential items like spare wheels (replacing with a tyre repair kit), excess sound deadening material, and lighter interior components. Replacing glass windows with polycarbonate alternatives can save considerable weight, though the windscreen should ideally remain as safety glass for structural integrity and visibility.

Lightweight Components

Aftermarket lightweight body panels made from fibreglass, carbon fibre, or aluminium can drastically reduce weight. Lighter alloy wheels also contribute to reducing unsprung mass, which benefits handling and reduces the load on the suspension. Even smaller items like lightweight battery options can shave off valuable kilograms.

Roll Cages and Chassis Stiffening

While a roll cage adds some weight, it significantly increases chassis stiffness, which can improve handling and provide a crucial safety benefit. This added stiffness allows for the removal of some interior bracing, potentially offsetting some of the cage's weight.

Peugeot 207 Wheel Modifications

Wheel choice impacts both aesthetics and performance.

Alloy Wheels

Upgrading to alloy wheels offers several advantages over standard steel wheels. They are typically lighter, reducing unsprung weight, which improves the suspension's ability to keep the tyre in contact with the road. Alloy wheels also often provide better brake cooling. While larger wheels can enhance the car's appearance, be mindful of the impact on acceleration and fuel economy. For most 207 models, 17-inch or 18-inch wheels with appropriately sized low-profile tyres strike a good balance between style and performance.

Conclusion

The Peugeot 207, with its diverse engine range and solid chassis, offers a compelling platform for enthusiasts looking to enhance their driving experience. By carefully selecting and implementing a combination of engine tuning, suspension upgrades, brake improvements, and strategic weight reduction, the 207 can be transformed into a more engaging and capable machine. Always research and consult with reputable specialists to ensure modifications are carried out safely and effectively.

Frequently Asked Questions (FAQs)

When was the Peugeot 207 introduced?

The Peugeot 207 was introduced for the UK market in 2006 and production continued until 2012. It replaced the Peugeot 206.

What are the best engines to tune on a Peugeot 207?

The 1.6L THP turbocharged petrol engines, especially the 175hp variant, are considered the best for tuning due to their inherent performance potential. The diesel engines also respond well to remapping.

Can I improve the handling of my Peugeot 207?

Yes, significant handling improvements can be made by upgrading the suspension with adjustable coilovers, replacing rubber bushings with polyurethane items, and fitting a stiffer rear anti-roll bar.

What are the most effective engine tuning modifications for a Peugeot 207?

For turbocharged models, a remap (ECU tuning) offers the best power gains for the money. For naturally aspirated engines, a fast road camshaft and cylinder head porting can yield substantial improvements.

Should I upgrade the brakes on my Peugeot 207?

Yes, upgrading the brakes with larger discs and performance pads is highly recommended, especially after increasing engine power, to ensure adequate stopping capability.

How much weight can I realistically save on a Peugeot 207?

While extreme stripping can save significant weight, practical modifications like lighter alloy wheels, removal of non-essential interior trim, and potentially polycarbonate windows can shave off a noticeable amount of weight, benefiting performance.