AT power

AT power for Porsche

AT Power Motorsport Products Ltd (UK), design, develop, and manufacture high quality Electronic Fuel Injection (EFI) systems and Individual Throttle Bodies (ITB’s) supplying all levels of motorsport from road going sports cars, kit cars, track day vehicles through to the global professional race and rally teams. Our unique designs and products are the modern approach for todays advanced engines.All our direct to head Throttle Bodies utilise our unique Patented “Shaftless Technology” with bespoke designs to achieve the maximum performance gains and not a traditional compromise system of a single throttle bodies mounted onto manifolds as are many of our competitors’ products.With our in-house experience of over 60 years of automotive powertrain design, along with our full product development, quality control, in-house manufacturing and final testing/validation of all our new products, ensures you will achieve the optimum performance from our Porsche products.

A Quick Look at AT power

AT Power Motorsport Products Ltd (UK), design, develop, and manufacture high quality Electronic Fuel Injection (EFI) systems and Individual Throttle Bodies (ITB’s) supplying all levels of motorsport from road going sports cars, kit cars, track day vehicles through to the global professional race and rally teams. Our unique designs and products are the modern approach for todays advanced engines.All our direct to head Throttle Bodies utilise our unique Patented “Shaftless Technology” with bespoke designs to achieve the maximum performance gains and not a traditional compromise system of a single throttle bodies mounted onto manifolds as are many of our competitors’ products.With our in-house experience of over 60 years of automotive powertrain design, along with our full product development, quality control, in-house manufacturing and final testing/validation of all our new products, ensures you will achieve the optimum performance from our Porsche products.

Choosing the Right Fit for Your Porsche

Where AT power is listed for Porsche, use the supplied model coverage and OE references to confirm suitability. Check details that commonly affect fitment such as model year, side/position, and connector type where relevant.

• Typical reasons to choose these parts include performance-focused intake and throttle upgrades where owners want sharper response and improved airflow, usually alongside other changes such as intake, exhaust, mapping, or wider maintenance.
• Issues that trigger changes are often sluggish response, restrictive or heat-soaked intake hardware, or disappointing results from previous modifications due to lack of calibration or supporting parts.
• Common Porsche engine-related symptoms that can point towards rebuild or internal wear include low or uneven compression, heavy oil consumption, smoke under load or overrun, persistent oil leaks, abnormal noises with RPM, metallic debris in the oil, low hot-idle oil pressure, overheating linked to internal friction, or misfires that persist after ignition and fuelling checks.
• Carburetion or fuelling hardware may need attention where there is hard starting, fuel smells or leaks, poor or lumpy idle, stalling, hesitation or flat spots, backfiring, black smoke, popping on overrun, uneven plug colour, poor fuel economy, or sticking throttle/linkage behaviour.
• Practical checks before major upgrades or tuning include confirming the engine’s basic health (compression and leak-down), inspecting bores where possible, checking for vacuum or boost leaks, reviewing sensor data, and ensuring coils, plugs, fuelling, cooling and oil systems are all in good order.
• After installation of performance intake or throttle components, careful ECU mapping, synchronisation (where applicable), and leak checks are essential to achieve smooth drivability and to avoid running excessively rich or lean.

Browse by Category

If you already know the area you are working on, start with the category and then filter by Porsche model. Where real-world symptoms and typical reasons to replace are provided, use them to keep the wording grounded.

Engine Rebuild Parts — Engine rebuild parts are typically changed during a planned rebuild or when symptoms point to internal wear, such as loss of compression, increased oil use, persistent leaks, abnormal noises, or contamination found during inspection. On Porsche engines, specialists often replace chains, guides, bearings, seals, gaskets and hardware while the engine is apart to reduce the chance of future strip-downs and to restore reliability after the rebuild.

• Before committing to a rebuild or major parts order, carry out compression and leak-down testing, inspect bores where possible, and check the oil/filter for debris so the scope of work and parts list is based on measured condition.
• When the engine is already apart, consider renewing hard-to-access wear items such as chains, guides, tensioners, major seals, relevant bearings and fasteners to avoid repeat labour later.

Carburetors & Parts — Carburettor components are replaced when a Porsche shows poor starting, flat spots, fuel leaks, inconsistent idle, or when the carbs are being refurbished after long storage. Seals harden, jets clog, floats stick and throttle shafts wear, so refresh parts are used to restore correct fuelling, drivability and to eliminate leaks on classic applications.

Direct-to-Head Throttle Bodies — Direct-to-head throttle bodies are a common upgrade in performance builds where owners want sharper throttle response, improved induction character and more precise control of airflow to each cylinder. On suitable Porsche engines, they are chosen as part of ITB conversions or higher-spec rebuilds, but they require careful installation, synchronisation and ECU mapping to maintain good drivability.

Engine Tuning — Engine tuning work is typically carried out to improve drivability, throttle response, fuel economy, or to support hardware changes such as revised intake, exhaust, camshafts or forced induction. On Porsche applications, calibration changes are usually made only after confirming the mechanical health of the engine, as mapping cannot correct underlying faults but can help resolve flat spots and poor running once the basics are sound.

Engine Modifications & Upgrades — Engine modifications and upgrades are used to increase power, improve response and durability, or address known weak points discovered during ownership or a rebuild. On Porsche builds this often includes cooling and oiling improvements, stronger internals, improved fuelling and ignition, and better intake/exhaust flow, typically prioritising reliability upgrades before chasing higher output.

Explore AT power at Design911

View the current AT power range for Porsche at Design911, then filter by model and category to narrow down to the right parts.