Whether you drive a Porsche 718 Cayman or Boxster—Base, T, GTS, or S—the rear-mounted heat exchangers create cooling challenges, especially under hard driving or increased boost. The factory coolant system was never designed to handle extreme temps. That’s why we engineered the RaggDoll Single-Pass Intercooler: a smarter, more efficient solution that doesn’t overwhelm your system like typical dual-pass designs.
No matter your setup, intake air temperature (IAT) affects ignition timing. Once IAT hits 104°F, timing gets pulled. Cross 120°F? You're losing big. Push past 140°F? Say goodbye to power—even if boost and AFRs look great.
On tuned 718s, heat soak can rob you of 20–40 HP or more. Whether you’re daily driving, canyon carving, or pushing for peak dyno numbers, keeping IATs low is non-negotiable.
• Maximizes Coolant Flow: Single-pass design minimizes resistance and maintains OEM pump efficiency
• Reduces Coolant Temps: Avoids excessive heat buildup that causes timing pull
• Larger Core Volume: Increases heat transfer surface area for better IAT control
• No Engine-Out Install Required: Simple, clean fitment without added complexity
• OEM+ Integration: Plug-and-play compatibility with the stock cooling system
For the ultimate cooling setup, pair the Single-Pass Intercooler with our Extreme Charge Cooling Kit — which includes:
• Larger coolant volume
• High-capacity pump upgrade
• Triple heat exchanger configuration
This system pushes the limits of cooling efficiency, keeping IATs near ambient even under heavy load.
Dual-pass systems were built to mimic factory routing—not performance. They increase pressure and heat without adding efficiency. Real-world testing (like Mishimoto’s study on the F80 M3/M4) shows that dual-pass designs often provide negligible benefits over a well-designed single-pass layout.
The RaggDoll Single-Pass Intercooler? It delivers measurable cooling gains right out of the box—no flow tuning, no headaches, just performance.
• Designed specifically for the 718 Cayman & Boxster cooling architecture
• Consistent IATs for stock or tuned setups
• Reduces timing pull, improves throttle response, and sustains power
• Straightforward install — no permanent modifications
• Ideal for daily driving, track days, or power builds
Whether you're running a mild tune or chasing big horsepower, the RaggDoll Motorsports Single-Pass Intercooler is built to perform. Unlike dual-pass gimmicks that overload the system, this intercooler is engineered for real-world cooling, giving you more consistent power, longer sessions, and a smarter way to keep IATs in check. No tricks. Just results.