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KMS King of Engine Performance for Porsche

KMS King of Engine Performance parts for Porsche are typically used in higher-output and carefully calibrated engine builds, where good mapping, fuelling, and supporting hardware are managed as a complete system.

A Quick Look at KMS King of Engine Performance

KMS King of Engine Performance information on this page is based on details supplied by the manufacturer or distributor, plus any OE references provided with the parts.

Choosing the Right Fit for Your Porsche

Where KMS King of Engine Performance 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 people choose these parts include strengthening known weak points, improving breathing, fuelling, and ignition control on tuned setups, and building engines that stay more consistent under sustained heat and load.
• Common issues in the wider system can include detonation-related damage, overheating, inconsistent power, misfires under load, and drivability problems when mapping, fuelling, boost control, or cooling are not matched to the hardware.
• Plan supporting modifications carefully: ensure fuelling, cooling, and calibration are matched to the hardware and intended use, and treat the engine as a complete system rather than focusing on a single component.
• Use logging where possible (temperatures, air–fuel ratio, knock activity) and favour conservative tuning choices if long-term reliability and repeatable performance are priorities.

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 usually fitted during a planned overhaul or when tests point to internal wear, loss of compression, heavy oil use, internal noise, or contamination. Because labour dominates the cost, owners often renew chains, guides, bearings, gaskets, seals, and critical hardware together for better reliability once the Porsche engine is back in service.

• Before committing to a rebuild, carry out compression and leak-down testing, bore inspection with a scope, and oil/filter checks so you understand whether a full rebuild or targeted repair is appropriate.
• When the engine is apart, it is sensible to replace chains, guides, tensioners, relevant seals, and hard-to-access wear items so a second strip-down is less likely.

Air Intake & Injection — Air intake and injection components are replaced when there are air leaks, fuelling faults, unstable idle, hesitation, or mixture-related fault codes. On Porsche engines, ageing rubber boots, vacuum lines, sensors, and injectors can all contribute to drivability issues, so parts are often renewed or upgraded during diagnosis or performance work.

• Use a smoke test and careful visual inspection to find intake leaks, as even small vacuum leaks can cause noticeable idle and low-load issues.
• If injector flow is uneven or units are leaking, cleaning can help in some cases, but replacement is common where wear or electrical faults are confirmed.

Inlet Manifold — Inlet manifolds and their gaskets are addressed when there are vacuum leaks, broken or sticking flaps on variable intake systems, or carbon build-up restricting airflow. People also service or change these parts when carrying out top-end work because access overlaps with injectors and other intake components on many Porsche engines.

• Unmetered air at the manifold can create multiple mixture-related fault codes and rough running, so confirming or ruling out leaks with a smoke test is useful.
• With the manifold removed, it is a good opportunity to renew gaskets, inspect vacuum lines, and check injector seals and accessible intake ports.

Throttle Body / Plenum Chamber — Throttle bodies and plenum chambers are replaced or upgraded when there is sticking, electronic throttle faults, air leakage, or physical damage that affects airflow and response. On Porsche applications, careful adaptation of electronic throttles and correct sealing after installation are important for stable idle and consistent drivability.

• A dirty or partially sticking throttle body can contribute to stalling, unstable idle, and hesitation; cleaning is sometimes enough but worn or faulty units may need replacement.
• After replacing an electronic throttle body, follow the recommended adaptation or relearn procedure and recheck for intake and crankcase ventilation leaks.

Engine Tuning — Engine tuning work is carried out to improve drivability, throttle response, and efficiency, or to support hardware changes such as intake, exhaust, forced induction, or internal upgrades. On Porsche engines, tuning is most effective when underlying mechanical condition, fuelling, and cooling are verified as healthy beforehand.

• Tuning cannot correct underlying mechanical faults, so checks such as compression or leak-down testing, verification of fuel supply and sensor data, and inspection for boost or vacuum leaks should come first.
• For long-term reliability, match the calibration to realistic goals and supporting hardware, and monitor knock, lambda, and temperatures rather than relying solely on how the car feels.

Explore KMS King of Engine Performance at Design911

View the current KMS King of Engine Performance range for Porsche at Design911, then filter by model and category to narrow down to the right parts.