Best Cold Air Intake for Subaru WRX in Canada
A cold air intake is one of the first and most popular upgrades for any Subaru WRX — it improves throttle response, adds induction sound, and supports higher power on a tuned car. But not all intakes are equal, and the WRX's turbocharged EJ or FA engine has specific requirements. Here's our guide to the best WRX intakes for Canadian buyers, available at MyPartsGuy.ca priced in CAD with no duties.
What Does an Intake Actually Do on a WRX?
The factory WRX airbox is restrictive by design — it prioritizes noise reduction and consistent airflow measurement for the MAF sensor over maximum flow. An aftermarket intake replaces this with a larger, less-restrictive system that allows the turbocharger to breathe more freely, improving spool characteristics and supporting higher boost levels on a tuned car. On a stock-tune WRX, the gains are modest — a professional tune is needed to fully exploit an intake upgrade.
Top WRX Intake Options
GrimmSpeed
GrimmSpeed makes some of the most trusted WRX intake systems available. Their cold air intake and shortram intake options are engineered specifically for the EJ and FA WRX platforms, with excellent fitment and quality construction. GrimmSpeed is one of the most popular choices in the Subaru community worldwide.
aFe Power
aFe's Momentum and Takeda intake systems are popular for WRX across multiple generations. Strong airflow numbers, quality construction, and good availability in Canada. The Momentum Cold Air Pro is a particularly popular choice for the FA-powered VA WRX.
Injen
Injen's SP cold air intake system is a long-standing WRX favourite — excellent quality, good fitment, and competitive pricing. Available for both EJ and FA-powered WRX generations.
AEM Induction
AEM's cold air intake systems offer strong value and reliable fitment for WRX. A good choice for budget-conscious buyers who don't want to sacrifice quality.
Short Ram vs Cold Air Intake for WRX
A cold air intake routes the filter away from engine heat into a cooler air source, maximizing intake air density. A short ram intake is simpler and less expensive but draws warmer air near the engine. For a turbocharged WRX where intake air temperature affects knock sensitivity, a cold air design is generally preferred.
Do You Need a Tune with a WRX Intake?
Yes — to safely and fully exploit an intake upgrade on a WRX, a COBB Accessport tune or professional dyno tune is recommended. Running an aggressive intake on a stock tune can cause lean conditions or MAF sensor errors on some platforms.
Canadian WRX Intake Buying
MyPartsGuy.ca stocks GrimmSpeed, aFe, Injen, and AEM intakes for WRX, all priced in CAD with no duties or brokerage fees.