Roush 2015-2017 Mustang 2.3L EcoBoost I4 Power Pack Level 2 - 421991

Do you have a 2015+ Mustang with the I4 2.3L EcoBoost engine and want the most power ROUSH Performance has to offer? You came to the right place!

The Roush Performance “Level 2” Power Pack for the 2015+ 2.3L I4 EcoBoost Mustangs adds a staggering 60 RWHP and 51 lb-ft. of torque to the stock 2.3L Ecoboost engine! Included in this Power Pack will be the ROUSH Performance Cold Air Intake for the 2015+ 2.3L I4 Mustang, the ROUSH Axle-Back Round Tip 304SS Exhaust System for the 2015+ 2.3L I4 Mustang, and a ROUSH Re-Calibration for the vehicle’s PCM (details seen below). As if that wasn’t enough, an optional 3-year/36,000-mile ROUSH Limited Powertrain Warranty gives you confidence to crank up the power!

Our cold air kits are the best in the industry, designed and tooled using factory CAD data to maximize available under-hood space, and injection molded from premium automotive grade materials for long life. An incredible 75% lower intake restriction over stock ensures you will never need to upgrade your intake.

The ROUSH premium 2.5” axle-back round tip exhaust system included is built from high-quality 304 grade stainless steel for long life and great sound. Included are 2 chrome-flashed round tips (which are embossed with the ROUSH logo), all necessary hardware, and instructions for cutting & installation

Roush calibration engineers have extensive OEM calibration experience and sweat the details to ensure strong performance without sacrificing drivability. Hundreds of hours spent in the lab and on the dyno, testing and validating rigorously, set our ROUSH calibrations apart from “guesswork” tuning found in other kits.

In addition to improved horsepower and torque, our kit also provides improved boost and throttle mapping that will lend a “sportier” feel right off idle to provide amazing drivability improvements all through the power band.

The ROUSH calibration in our Power Packs is easily programmed into the ECU of the vehicle via an industry standard J2534 tool & our free Roush Diagnostic Tool (RDT) software (note: dealer service charges may apply). Most dealers, should they be equipped with the proper tool, can complete the calibration process in under an hour. Our extensive list of ROUSH Performance authorized dealers can be found at the top of our web page.

Note: Not approved for sale or installation in California or states that require an EO number

Note: For owners of 2015+ Mustangs that are equipped with ROUSH’s quad-tip exhaust, ROUSH recommends you go with the Level 1 Power Pack, as the exhaust in this system cannot be used on your vehicle.