Nissan 370Z 3.7L 2009+ Injen SP Cold Air Intake
(Injen SP1989P / SP1989BLK)
Nissan 370Z 3.7L 2009+ (NO NISMO EDITION - USE SP1990P/SP1990BLK) with MR Technology & Air Fusion Injen SP Cold Air Intake
Model Number: SP1989P, SP1989BLK
Note to all potential Injen product buyers: Buying products that are violating Injen's pricing terms constitutes a voided warranty. We are authorized to resell their intakes. Buy from an authorized web dealer to ensure your intake is covered under warranty.
The SP series from Injen incorporates MR Technology, an Injen exclusive that stabilizes the vehicles air-fuel ratio and tunes the intake to be within safe factory limits of performance. Injen tests and tunes every intake for optimal performance. With MR Technology, they take the tuning stage one step further. Typically, vehicles that require MAF sensors have had to simply bolt their MAF sensor onto the aftermarket intake housing. This made for a simple installation, but it changed the diameter of piping where air flowed past the sensor, changing the characteristics of the air to fuel ratio the MAF expected to see. This could lead to unstable or lean air/fuel mixtures which can damage high-horsepower or high-performance engines. Injen has carefully tested and tuned their intakes with MR Technology to offer the most stable balance between horsepower and safe operating parameters by changing the diameter of the sensor piping where necessary.
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