What are people's experiences with the Greddy V-mount intercooler for the Mazda RX-7 FD?

The Greddy V-mount kit is widely regarded as the best production V-mount system available for the FD RX-7 ⁶. It is a comprehensive, proven setup that significantly improves cooling performance and engine response compared to traditional front-mount intercoolers.

Here are the key technical takeaways regarding its performance and installation:

Cooling and Performance By separating the airflow, the V-mount orientation ensures that both the intercooler (266x400x100mm) and the included high-efficiency aluminum radiator (355x631x48mm) receive fresh, unblocked air ³. This configuration effectively solves the heat-soak and overheating issues common with front-mount setups, with coolant temperatures reliably staying under 200°F even during heavy street driving ⁷.

Kit Completeness and Compatibility The system is a true bolt-on kit that includes all necessary piping, couplers, ducting, and a custom radiator, while still allowing you to retain the factory air conditioning ⁶. If you are running the 1993-spec stock twin turbos, the kit features a specific Y-pipe configuration and typically includes matching intakes, though single turbo versions may omit the intakes ⁹. The system is also confirmed to fit perfectly with Greddy Airinx filters and HKS Racing Suction intakes ².

Installation Difficulty: Hard Although the Greddy kit is well-engineered and bolts right up, installing any V-mount setup is a major undertaking. Nearly everything in front of the engine has to be relocated or modified. To complete the installation, you will need to miniaturize or relocate the battery, modify the power steering lines, stand the radiator up, and carefully bend or modify the AC lines to clear the new ducting and hardware ⁶.