TURBOCHARGING
From K04 to hybrid turbo: building usable track power
Planning the next step for a K04-equipped Audi TT: more airflow, matched supporting parts and power you can use lap after lap.
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Parts. Projects.
Passion.
A look inside the cars, supplied parts and workshop builds that keep our enthusiasm for motoring alive.
Explore our project photos and practical notes on choosing parts, checking fitment and caring for your car.
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FROM THE WORKSHOP
The details behind the build.
Track TT notes on hybrid turbos, cooling and fuelling, alongside weight savings, intake fitment and workshop projects.
COOLING
Track TT cooling: replacing the thermostat and checking its housing
Why the thermostat, plastic housing and seals deserve attention before a circuit day, especially when coolant loss or rising temperatures appear.
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FUELLING
Choosing injectors for a 400+hp track TT
Our use of 550cc Bosch injectors, why the flow rating needs context, and how to match fuelling to the complete build.
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TRACK PREPARATION
Lightweight performance batteries: saving weight for the track
Why we use a compact performance battery in our track builds, and what changes compared with a conventional road-car battery.
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BRAKES
Planning a brake upgrade: start with the whole system
A closer look at used pads, part selection and the checks that come before a brake upgrade.
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INTAKE
Changing a cone air filter: fitment before appearance
Audi and Honda engine-bay photos show why size, support and filter type matter.
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HOSES
Silicone hoses: check every connection
Ageing hoses, heat cycles and higher boost: why the hose, routing and correct clamps all matter on a mapped track car.
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COOLING
Front-mount intercoolers: plan the complete installation
AIRTEC and Forge front-mount intercooler installations on two Audi TT builds.
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WHEEL CARE
Cleaning alloy wheels: take care around the details
A close-up of an Audi wheel highlights the areas that collect dirt and brake dust.
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STYLING
BMW X5 front grille installation
A closer look at the front grille detail on this BMW X5 project.
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STYLING
BMW X5 rear spoiler kit
A rear-quarter view of the BMW X5 spoiler styling and contrasting black details.
Read the build notes ↗TURN UP THE DETAIL / SOUND CLIP
Audi TT — Milltek exhaust sound.
A short in-car exhaust and rev-limiter clip from our Audi TT project collection. Press play to hear it.
THE PROJECT COLLECTION
Under the bonnet.
Out in the real world.
Audi TT, Honda S2000, BMW X5 and close-up workshop details.
Real photos. Useful context.
Workshop photographs come from our supplied project collection; the representative injector image is credited to Bosch Motorsport. Posts describe what is visible and the checks to consider; they are not vehicle-specific fitting manuals. Third-party branding identifies the parts shown and does not imply a manufacturer partnership or that every pictured part is supplied by TTRP Racing.
Looking for a part for your own project? Send us your vehicle details, existing part number and measurements.
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