The PERRIN Short Ram Intake is designed to improve airflow, throttle response, and turbo sound while maintaining smooth drivability for Subaru WRX and STI models.
This intake system replaces the restrictive factory airbox with a high-flow intake tube and performance air filter, allowing the turbocharger to draw air more efficiently. The short ram design provides a direct, responsive airflow path that enhances throttle input and delivers quicker turbo spool.
Engineered and tested by PERRIN Performance, this intake system features precision-formed intake tubing and a reusable high-flow air filter designed for proper MAF scaling and consistent performance. The result is a sharper driving feel and a noticeably more aggressive induction sound under boost without sacrificing reliability.
The PERRIN Short Ram Intake is ideal for enthusiasts seeking a straightforward bolt-on upgrade that improves responsiveness and enhances turbo character.
Key Features & Benefits
Short ram intake design for improved airflow
Enhanced throttle response and turbo spool
Reduced intake restriction vs factory airbox
Reusable high-flow air filter
Aggressive yet refined turbo induction sound
Engineered for proper MAF sensor scaling
Direct bolt-on installation
Vehicle Fitment
Subaru WRX (varies by year – confirm application)
Subaru STI (varies by year – confirm application)
ECU tuning recommended for optimal performance and drivability.
Short Ram Intake vs Cold Air Intake
Short Ram Intake
Faster turbo response feel
Simpler installation
Louder induction sound
Compact engine bay fitment
Cold Air Intake
Lower intake air temperatures
Better consistency during extended high-load driving
More complex installation
If you want quicker response and stronger turbo sound with easy installation, short ram is the move.
Perrin | Short RAM Intake | Subaru 02-07 WRX/STI (PSP-INT-201)
Subaru
Intake






