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Mustang Power Pak w/ Boss Intake - Manual 11-14

Mustang Power Pak w/ Boss Intake - Manual 11-14
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Manual Boss Mustang Power Pack
555-3939 - Manual Boss Mustang Power Pack - $1, 249.95
Steeda Replacement Dual-Cone Filter
Air Filter Cleaning Kit
Our Price: $1, 249.95
Market Price: $1, 374.95
You Save: $125.00
  Installation Info
Time to Install
About 3 Hours
Level of Difficulty
Tech Recommended
Tools Needed
Basic Tools
  Product Description
Ford Racing's 5.0L Boss Intake Manifold paired with Steeda's proven high flow cold air intake system and custom SCT tuning produce awesome, usable top end horsepower gains without sacrificing overall torque vs a stock Mustang GT.

The resulting power increase gives you fierce acceleration while preserving smooth driveability and control during part throttle everyday use.



Road racers will appreciate the linear, smooth torque curve allowing for more consistent corner exit. Drag racers and road racers alike will appreciate the top end horsepower for excellent 1/4 mile performance in drag racing and hard acceleration on long straights on road courses.

Expect peak power gains in excess 50 horsepower over a stock GT on stock exhaust, but peak gains don't tell the whole story. With the Boss intake top end power never falls off, giving you a car that just keeps pulling hard shift after shift. It is an intoxicating feeling you will enjoy over and over again.

Besides the parts in this package, you will need the following parts from your local Ford dealer for a complete installation. Road racers will appreciate the linear, smooth torque curve allowing for more consistent corner exit. Drag racers and road racers alike will appreciate the top end horsepower for excellent 1/4 mile performance in drag racing and hard acceleration on long straights on road courses.
  • Ford Service Part # : CR3Z-9G297-A, Hose (1 pc.)
  • Ford Service Part # : CR3Z-9G290-B, Bracket (1 pc.)
  • Ford Service Part # : CR3Z-9J280-A, Fuel Lines (1 pc.)
  • Ford Service Part # : W506974-S437, Screw M6x16mm (1 pc.)
  • You will also need to extend the 2 wire fuel vapor purge valve harness.
Notes: Requires minimum 91 octane fuel for advertised power gains.

This kit now uses our BOSS specific cold air system for perfect fitment. Kit number 555-3940 includes hardware to adapt Boss cold air which is manual transmission specific for use with the 5.0L GT automatic transmission.

Product Benefits
  • Matched package including Cold Air, Boss Manifold, and correct custom tuning
  • Available for manual and automatic transmission vehicles
  • Intense top end horsepower without killing overall torque
  • Smooth, flat torque curve with smooth part throttle driveability
  • Peak gains in excess of 50 horsepower
  Product Fitment
 This product fits the following vehicles
  • 2014 Mustang GT Manual
  • 2013 Mustang GT Manual
  • 2012 Mustang GT Manual
  • 2011 Mustang GT Manual
  Product Reviews
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Reviewed by stang64
09/13/2013 - 02:45:15 PM
Gains gains gains

This is what I'm talking about. What a huge change to everything. My car really woke up with the addition of this package. I was a huge change in power, and the appearence of my engine compartment. The installation went smoothly. The tune works perfect. My idle quality is perfect with the billet MAF the have in the kit!
Reviewed by jasonc32amg
08/05/2013 - 11:55:04 AM
Boss Power Pack

I has the Boss power pack installed on my manual '13 GT with @ 700 miles on the odometer. The install included the Boss manifold, the Steeda CAI, and an SCT tuner with Steeda tune. I also had a set of delete pipes installed at the same time.

My results were very positive. I noticed a minimal impact on low end coupled with a major increase to the top end hit. The car positively rocks and actually picked up a few mpg if I can keep my foot out of it. I don't have any dyno or strip results to report but I hope to hit moroso some time when it's dry. I've got about 3,000 miles on my car so far and it's running strong.

Another benefit to this kit is the aesthetics. The manifold and CAI look great, especially after deleting the silly sound pipe and adding a set of breathers.

Steeda is local to me so they did the install and I couldn't be happier with the service and follow up.