The K&N 57-2590 is a 57 Series FIPK (Fuel Injection Performance Kit) cold air intake for the fuel-injected 5.0L V8 in the 2015-2017 Ford Mustang GT. It pairs a black roto-molded HDPE intake tube with a washable, oiled cotton High-Flow filter that drops into the factory air box, so the stock airbox stays in place. The manufacturer guarantees a horsepower and torque increase and reports an estimated gain of about 9 hp on a 2015 Mustang 5.0L dyno chart. Owners on user forums describe the real-world gain as modest unless the car is also tuned, so buyers should expect the intake to improve airflow and throttle response rather than deliver a dramatic power jump on its own. The reusable filter and the manufacturer's No-Hassle Lifetime Limited Warranty help offset the cost over the life of the car, compared with replacing disposable filters. Search terms this part matches include 2015 2016 2017 Mustang GT cold air intake, 57-2590 FIPK, Coyote 5.0 intake, reusable oiled filter, and 50 state legal intake.
Because the system reuses the factory air box, installation stays straightforward. The manufacturer rates a typical install at 60 minutes or less using simple hand tools, and its published tool list includes a wrench, extension, flat blade screwdriver, and Allen wrench. Plan on reviewing the manufacturer's installation instruction sheet before you start. Owners on user forums also report that intake air temperatures can rise with a cold air intake, and some have added grille openings to lower them, so check IAT readings after installation if you drive in hot weather.
No. The manufacturer states the included filter drops easily into the factory air box, so the stock airbox stays in place.
The manufacturer lists the 57-2590 as 50 State legal.
The manufacturer's guaranteed gain is stated without a tuning requirement in the materials reviewed, but owners on user forums report that a tune generally adds more power and that intake-only gains tend to be small. Confirm tuning requirements with the manufacturer before purchase.
This is a bolt-on job that most owners can complete in an afternoon. The manufacturer publishes an installation PDF and instruction sheet, and its listed tools are a wrench, extension, flat blade screwdriver, and Allen wrench. Disconnect the negative battery cable before you work around the mass air sensor and throttle body connections. Reinstall the filter and clamp every connection securely, then check for air leaks at the couplers. Owners on user forums report intake air temperatures can rise with cold air intakes, so verify IAT behavior after your first drive.
