OEM

Performance Parts vs. OEM: When Should You Upgrade?

At North East Auto Tech, we know that VAG enthusiasts—whether driving a Golf GTI, Audi S3, or SEAT Leon Cupra—are always looking for ways to enhance performance. One of the most common questions we hear is:

“What’s the difference between OEM parts and performance upgrades, and when should I choose one over the other?”

Whether you’re planning a remap or just want more excitement from your drive, understanding how performance parts differ from OEM is key to getting the results you want—without compromising safety or reliability.

When Should You Choose Performance Parts Over OEM?

You should consider upgrading when:

• You’re planning a Stage 1 or 2 remap

• You want better cornering or braking performance

• Your factory parts can’t handle increased power or load

• You’re preparing the car for track days or spirited driving

For example, remapping your Audi TTS without an uprated clutch or intercooler may give short-term gains, but can quickly lead to heat soak, clutch slip, or component wear.

The Risks of Remapping Without the Right Hardware

Many drivers make the mistake of remapping first—then upgrading later. But remapping your ECU increases power and torque, which puts added strain on the whole system.

Without the right supporting hardware, you risk:

• Turbo overheating or boost leaks

• Brake fade under hard driving

• Clutch or gearbox wear

• Poor fuel economy

• Reduced reliability and drivability

A proper performance build balances power gains with supporting upgrades like high-temp brake fluid, stronger mounts, uprated fueling, and more efficient cooling. We exclusively offer Revo remaps. Revo clearly outlines when specific hardware upgrades are recommended, and when they’re essential to maintain the health and reliability of your vehicle.

What’s the Best Upgrade Path?

The ideal upgrade path depends on what you’re looking to achieve with your vehicle—whether it’s improved drivability, track performance, or enhanced everyday use. At our specialist VAG workshop, we often recommend the following staged approach:

• Performance air intake systems to increase airflow and support engine efficiency.

• High-flow exhaust systems to reduce back pressure and unlock additional power, especially when paired with tuning.

• Uprated intercoolers to maintain cooler intake temperatures and avoid power loss under load.

• Upgraded clutch kits to handle the extra torque delivered by performance tuning and remaps.

• Big brake kits or performance brake systems to improve stopping power—especially important when increasing speed and engine output.

These upgrades help ensure your vehicle performs at its best while remaining reliable. Whether you’re planning a remap or already running more power, the right hardware can make all the difference.

VAG Tuning and Hardware Experts

At North East Auto Tech, we don’t just install parts—we build tailored upgrade packages that work with your specific vehicle and your performance goals.

Whether you’re tuning a Golf R, Audi RS3, or Skoda Octavia VRS, we make sure every component works in harmony.

Thinking About Upgrading? Let’s Chat.

We offer honest, expert advice on:

• Remapping

• Suspension and handling upgrades

• Brake systems

• Injector and fueling setup

Call us on 01642 613852
Or send us a message on Facebook  ‘here‘

OEM parts vs Aftermarket, which do you opt for on your vehicle?

There is a difference between cheap aftermarket parts and Uprated aftermarket parts. Aftermarket parts are made to perform the same function as OEM but they are produced by a third party. OEM parts are as the acronym suggests, original equipment manufacturer. These parts are tested by the auto maker that installed them on your vehicle when it was new. Aka a tier 1 supplier such as Sachs, Mahle and ZF.

Uprated Aftermarket parts are reverse engineered to find the strengths and weaknesses of OEM. The performance specialists can then create parts which perform in some cases better than the original part. This can be done by slightly altering the design or the materials of the product.

Cheap aftermarket parts are created usually using less quality materials and tend to fail much quicker than OEM parts. Yes they are cheaper to purchase initially however if they fail quicker its more economical to fit the correct parts for the job from the start! This is why as a business we only replace faulty parts on a vehicle with OEM parts or if requested Uprated aftermarket parts such as Revo, Racingline and Superpro.

OEM and genuine…

There is a difference and that is that genuine parts are made by the manufacturer and branded and priced as such. OEM parts are as explained above however branded by a third party and priced much cheaper. OEM suppliers are companys such as Lemforder, TRW and Textar. They are usually made in the same factory and go through the same testing as the genuine parts therefore are essentially the same.

What about my warranty?

Always refer to the manufacturers guidelines when looking to use aftermarket parts and consider whether you vehicle is still under warranty. If its still under warranty fitting aftermarket parts may invalidate it if anything were to go wrong.

Obviously we also have to square up our priorities with our budget, vehicle maintenance can be expensive. However this is why we recommend using OEM parts. We carry out extensive vehicle checks before just stating ABC and parts need replacing.

If your looking at upgrading parts to uprated contact us here: We can give you advice for what you are aiming for and send you an estimate!

OEM parts vs Aftermarket