Porsche 718 Cayman & Boxster Air Filter Turbo Inlet Assembly (Base, T, S & GTS 2017–2024) – RaggDoll Motorsports

RaggDoll Motorsports Air Filter Turbo Inlet

Porsche 718 Cayman & Boxster 2.0T / 2.5T S & GTS

Unlock Your Turbo’s True Potential

The RaggDoll Motorsports Air Filter Turbo Inlet is a high-flow intake upgrade for the Porsche 718 Cayman and Boxster platforms, designed to eliminate the first severe airflow restriction in the 718’s intake system by replacing the factory compressor inlet on your turbocharger.

Although there are gains to be seen when installed on an untuned 718 2.0L or 2.5L turbo engine, it was built to truly shine on tuned street cars, upgraded turbo setups, and track-driven builds. It delivers improved airflow, faster turbo response, and increased power headroom without sacrificing OEM fitment or drivability.

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Why This Air Filter Turbo Inlet Exists

The RaggDoll Motorsports Air Filter Turbo Inlet is engineered to dramatically increase the efficiency and responsiveness of both the factory BorgWarner B03G and K04 turbochargers. It is also fully compatible with all 718/982 hybrid turbo upgrades.

By eliminating the restrictive factory pre-compressor bottleneck, our inlet allows the turbo to breathe more freely, improving both power and drivability across the entire RPM range.

Installing the RaggDoll Inlet is a highly rewarding upgrade. It is typically a moderate DIY installation and a straightforward job for most professional shops.

Independent dyno testing shows 5–7% gains on tuned and bolt on setups, and many 718 enthusiasts have posted dyno results showing gains of 30+ wheel horsepower and 30+ lb-ft of wheel torque. This is absolutely possible and common on tuned, full bolt-on cars.

The performance story doesn’t end there. Thanks to the massive increase in airflow, power comes on faster, builds sooner, and holds stronger. Your Porsche 718 Cayman or Boxster will also sound incredible, with a sharper, more aggressive induction roar under throttle.

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Key Features & Benefits

* Larger internal diameter reduces inlet restriction and pressure drop.

* Optimized bend geometry provides a smoother airflow path into the compressor.

* Improved turbo response with faster spool and sharper throttle response.

* Increased power headroom to support higher boost levels and larger turbochargers.

* OEM-style fitment and factory sensor retention.(must cut factory induction tube)

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Who This Is For

Ideal for:

* Tuned and untuned Porsche 718 models

* Upgraded turbocharger builds

* Ethanol-and gas fueled setups

* Track-focused vehicles

* Owners looking for improved airflow, quicker turbo response, and reduced turbo strain

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Installation & Tuning Notes

This upgrade has been installed successfully by hundreds of DIY owners, Porsche independent shops, and Porsche dealers around the world.

If you’re not confident with hands-on mechanical work, we recommend having a professional shop perform the installation because the factory plastic induction tube needs to be cut.

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What’s Included

* RaggDoll Motorsports High-Flow Air Filter Turbo Inlet

* Installation hardware

Optional / Recommended Upgrades

For maximum airflow and performance, we recommend pairing the RaggDoll Motorsports Air Filter Turbo Inlet with:

* RaggDoll High-Flow Intake System

* RaggDoll High-Flow Air Filter

* RaggDoll Intercooler

* RaggDoll Hybrid Turbocharger

* RaggDoll ECU Calibration

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Performance & Drivability Improvements

* Faster turbo spool and improved transient response

* Reduced inlet pressure drop under high airflow demand

* Improved turbo efficiency and reduced compressor effort

* More consistent boost delivery at higher RPM

* Noticeable gains when paired with a high-flow intake and RaggDoll ELEV exhaust components

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Construction & Fitment

* Precision-formed high-flow inlet design

* High grade aluminum construction 

* Direct replacement for the factory turbo inlet (once induction tube is cut.) 

* Compatible with all 2017+ Porsche 718 Cayman & Boxster 2.0T / 2.5T engines

* Works with both stock and aftermarket turbochargers

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Designed as Part of a Complete Airflow System

The RaggDoll Air Filter Turbo Inlet is engineered to work as part of a balanced airflow system.

For the best results, pairing it with a high-flow intake, upgraded intercooling, and a properly matched turbocharger is strongly recommended.

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Why Choose RaggDoll Motorsports

RaggDoll Motorsports components are engineered solutions developed through real-world testing on the Porsche 718 platform.

* Thoughtful airflow design

* OEM-level integration

* Track-tested, street-proven performance

Built differently—because efficient airflow is the foundation of reliable power.

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Vehicle Compatibility

Vehicle Engine Turbocharger Fitment

2017+ Porsche 718 Cayman Base 2.0L Turbo Factory BorgWarner K04 ✔ Compatible

2017+ Porsche 718 Boxster Base 2.0L Turbo Factory BorgWarner K04 ✔ Compatible

2017+ Porsche 718 Cayman T 2.0L Turbo Factory BorgWarner K04 ✔ Compatible

2017+ Porsche 718 Boxster T 2.0L Turbo Factory BorgWarner K04 ✔ Compatible

2017+ Porsche 718 Cayman S 2.5L Turbo Factory BorgWarner B03G VTG ✔ Compatible

2017+ Porsche 718 Boxster S 2.5L Turbo Factory BorgWarner B03G VTG ✔ Compatible

2018+ Porsche 718 Cayman GTS 2.5L Turbo Factory BorgWarner B03G VTG ✔ Compatible

2018+ Porsche 718 Boxster GTS 2.5L Turbo Factory BorgWarner B03G VTG ✔ Compatible

Turbocharger Compatibility

Compatible with:

* Factory BorgWarner K04 turbochargers

* Factory BorgWarner B03G VTG turbochargers

* RaggDoll Motorsports hybrid turbochargers

* Most aftermarket hybrid turbochargers designed for the Porsche 718/982 platform

Installation Requirements

* Factory plastic induction tube must be cut during installation.

* Factory sensors and electrical connections are retained.

* No ECU calibration is required to install this component.

* ECU calibration is recommended to maximize performance when paired with additional airflow modifications.

Frequently Asked Questions

Will this fit my stock turbo?

Yes. This inlet is designed to work with both factory BorgWarner K04 (2.0L) and BorgWarner B03G VTG (2.5L) turbochargers.

Will it work with a hybrid turbo?

Yes. It is fully compatible with RaggDoll hybrid turbochargers and most aftermarket hybrid turbochargers designed for the Porsche 718 platform.

Does the car need to be tuned?

No. The inlet can be installed on a completely stock vehicle. However, it provides its greatest performance benefits on tuned vehicles and upgraded turbocharger combinations.

Is this a bolt-on installation?

No. The factory plastic induction tube must be cut during installation. Most experienced DIY owners can perform the installation, while professional installation is recommended for those unfamiliar with this type of work.

Will I hear the turbo more?

Yes. Most customers notice a noticeably sharper induction sound along with increased turbo spool and compressor sound during acceleration.

Does it retain factory sensors?

Yes. All factory sensors and connections are retained.