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Whipple W175AX 2.9L Twin Screw Supercharger Kit - Stage 1 (15-17 GT)

Market Price $8,899.99 You Save 17% ($1,504.00)
Starting At

$7,395.99

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  • Item 384438
  • MPN# POL-STG2

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Polished White Blue Black Red Gold
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Features & Details

  • Increase Rear Wheel Horsepower and Torque
  • W175ax 2.9L Twin Screw Whipple Supercharger - Complete Kit
  • 6-Rib Belt System with Adjustable Idler System
  • Air-To-Water Intercooler
  • Self-Contained Oversized Oiling System
  • Fits Under Stock Factory Hood
  • Re-Uses Factory Throttle Body
  • 50-State Emissions Legal
  • Choice of 6 Finishes
  • Fits 2015-2017 GT Mustangs
Even More Power! The stock 2015-2017 GT Mustangs come with an awesome 435 Horsepower and 400 lb/ft of Torque from the factory, but after installing a Whipple Stage 1 Supercharger on your Pony, you'll be planting well over 825 Horsepower and 640 lb/ft of Torque to the pavement.

Kit Contents. Opt for this 50-State Legal Supercharger System if you are hunting for the best power and performance out there for your S550. Complete with an an enormous air-to-water intercooler, PCM programming and installation hardware, this Twin Screw Whipple SC will deliver top of the line power for your Pony.

Choice of 6 Finishes. This Whipple Stage 1 Supercharger not only improves horsepower and torque, but also improves your Mustang's under hood appearance. It is available in your choice of six finishes, including Polished, White, Blue, Black, Red and Gold. Please choose your color from the ordering options above.

Application. This Whipple W175AX 2.9L Twin Screw Stage 1 Supercharger Kit is specifically designed for use on the 2015-2017 GT Mustangs that are equipped with the 5.0L 4V Coyote engine.

Technical Note. This Whipple Supercharger will re-use the factory throttle body.

Please Note: Whipple Supercharger Kits are built to order for our customers. Because of this, there can be a 10 to 14 day lead time on orders.

Fitment: 2015 2016 2017 Details

What's in the Box
  • W175ax 2.9L Twin Screw Whipple SC
  • Air-to-Water Intercooler
  • Crusher Air System
  • PCM Programming
  • OBDII Flash Tool
  • Flight Control Software
  • Installation Hardware
Installation Info
Tech Specs
Specifications.
  • W175ax 2.9L Twin Screw Whipple Supercharger Assembly
  • Finish Choices: polished, white, blue, black, red, or gold
  • 6-rib belt system with adjustable idler system
  • Air-to-Water Inter Cooler
  • Self-contained oversized oiling system
  • Plug and play wiring
  • Fits under factory hood with no modifications
  • Professional Installation Recommended
Will it fit my Mustang?
  • GT - 15, 16, 17

People Who Bought This Item Also Bought

Most Helpful Reviews

5/5
Whipple W175AX 2.9L Review

The Whipple W175AX 2.9L kit for the 2015-2016 Mustang GT is a very comprehensive supercharger system, and has everything except the coolant needed for the SC/intercooler system itself. I installed the ...

Read More
Helpful (8)

5/5
Whipple power

I ordered the Supercharger at the end of March and it showed up May 19th. I just had it installed along with kooks long tube off road headers and carbon fiber driveshaft. I already had the corsa extreme ...

Read More
Helpful (5)

Overall Rating 5 out of 5 stars
Read All 10 Reviews

Customer Photos (8) Submit Your Photo

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40 Questions / 5 Answers

Ask a Question

When installing this supercharger, would the engine needs forged rotating assembly, or would the stock block hold up with this power?

Shadow

  • No, the engine would not need to have a different forged rotating assembly. The new model 5.0 coyote engines that came in the 15-17 mustang GT's/GT350/GT350r already have forged internals, so the lower end, and the engine in general, can handle the amount of power that this supercharger would give it.

    AMjordan

Helpful (3)

Will I have to modify the block of my '17 GT to install this supercharger?

PJohnston

  • The Whipple W175AX 2.9L Twin Screw Supercharger Kit should not require modification to the factory block.

    Rob D

Helpful (2)

If you install this supercharger on a bone stock 2015-2017 mustang GT, would you need to do anything with the fuel system or would the factory system handle this without problems? Obviously this kit comes with injectors, I'm just wondering if anything else is reqd

SeanD

  • The Whipple W175AX 2.9L Twin Screw Supercharger Kit comes with everything included for your GT and will not cause any problems. You can upgrade your injectors, fuel rails, fuel lines and fuel pump if you decide to run a specific set-up or different fuel.

    AMJEFF

Helpful (1)

What is the MPG gonna be after installing this kit???

BrianS

  • Unfortunately, there are no reported fuel efficiency numbers available for the Whipple W175AX 2.9L Twin Screw Supercharger Kit. Generally speaking, a supercharger will lower average MPGs due to the increase in fuel and air consumption.

    VincentV

Helpful (1)

Does this system require modifying the block the same way that the roush and ford performance supercharger do? Also I would be retaining stock clutch for now until further down the road. Not planning on racing just want it for the extra power.

DustinL

Will my passenger side mishimoto baffled oil separator still fit?

Dasko3446

  • The Mishimoto Oil Separator may work with this supercharger if you reroute it. The pulley on the supercharger may cause issues if the Separator is in its original location.

    AshleyK

Helpful (1)

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Customer Reviews (10) Write a Review

Overall Rating 5.0

out of 5 stars

Installation Time:Weekend

Installation Cost:$1000+

  • Performance Gain 5 5
  • Fit 5 5



  • 5/5

    Installation Time: Weekend

    April 21, 2017

    Whipple W175AX 2.9L Review

    The Whipple W175AX 2.9L kit for the 2015-2016 Mustang GT is a very comprehensive supercharger system, and has everything except the coolant needed for the SC/intercooler system itself. I installed the 2.9L in January 2017 into a 2016 GT PP with manual transmission, and opted for the Stage 1 kit that utilizes the factory 85mm throttle body. I am very particular about installation quality and precision, and took over a week to install, spending a couple hours during the weekday evenings and 6-8 hours each day on the weekend, so maybe 24 hours or so. The process was delayed a few days after I started because a couple heater hoses supplied by Whipple were incorrect. Whipple was extremely responsive in supplying the correct part(s). I’ve been wrenching for a long time, so there was nothing in the install that was very difficult, but if you’re a novice make sure and read the install guide front to back before starting. The 2.9L gives the 5.0L Coyote phenomenal power, even with the stock throttle body. I live at 7200’ elevation, so my power output is probably down 20 from those at sea level. The car is scary fast and I worry about eventual driveline issues with this much power (clutch, UJs, half-shafts), as well as possible problems with engine internals. I haven’t read any contemporary literature about reduced lifespan of any of those components, maybe since this is a fairly new SC for the Coyote platform. **INSTALL NOTES** As for the installation itself, initial disassembly was fairly time consuming (removing the front bumper cover and belly pan, engine intake and cooling hose disassembly). Install instructions were very accurate except for a few minor errors. Whipple is very good at updating/correcting the install guide and supplying the most recently updated version. During the install I noticed several things of interest: (1) The heat exchanger supply line from the reservoir was too short, and had to splice a 3” piece to complete. (2) I had to add a 90-degree elbow into the SC intercooler supply line (from the heat exchanger) to accommodate the swing needed by the tensioner to avoid interference with the supply line (I actually noticed nicks in the supply line caused by tensioner interference). (3) The fuel rails (once torqued to specs) interfere too greatly with the remaining center SC bolts making it very difficult to get an accurate torque on those. I ended up changing the torque sequence slightly to accommodate, torqueing the fuel rails last. (4) Check the orientation of the thermostat carefully upon reinstallation, the install guide shows it in the correct position, but your perspective is different when installing it in an inverted position. (5) Be very cognizant of wiring harnesses/connectors and heater hoses near the idler plate. If not zip-tied correctly they can come in contact with the SC drive belt. (6) Very small amounts of lithium grease help immensely in the install of injectors, intake components, and hoses. After install and initial shakedown runs, I had a belt misalignment problem which actually caused a belt breakage. Whipple was very responsive and sent out new idler plate offsets (stands) that were originally manufactured incorrectly, causing a misaligned idler plate (hence misaligned pulleys), resulting in belt slippage, throws, and breakage. Correctly-sized offsets are most certainly supplied with current releases of the 2.9L SC. I also notice a slight hesitation upon acceleration in the 2000-3000 RPM range. I attribute this to the 7200’ elevation and will take the car to a lower elevation to confirm. If the problem persists I will either get another tune (non-Whipple) or add the Stage 2 intake (132mm oval) with a new tune from Whipple. Overall, although there were a few minor challenges, the install went well and the SC seems bulletproof now. It whines noticeably under heavy acceleration (although still too quietly), mainly because of the twin screw design. Good job, Whipple!

    CraigK

    Year: 2016 Submodel: GT

    Helpful (8)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $1000+

    June 14, 2017

    Whipple power

    I ordered the Supercharger at the end of March and it showed up May 19th. I just had it installed along with kooks long tube off road headers and carbon fiber driveshaft. I already had the corsa extreme which was already loud. This thing sounds and performs like a race car. It is quick. Install took 4 days since whipple forgot to add bolts to the kit. We had to call and let them know but they overnighted them the next day. The instructions were amazingly easy to understand. If I had looked at them before telling my mechanic to do the install, I may have tried to do it myself.

    Mike

    Year: 2017 Submodel: GT

    Helpful (5)

  • 5/5

    Installation Time: Weekend

    August 23, 2017

    Tire shredding monster!!!

    Took a weekend to install and let me tell you it completely transforms this car. The ability to just bolt on this much power is crazy. This thing with only 10lbs of boost screams which is worth the money all by itself. Make sure you put beefy tires on your car because I spin my 305 Mickey thompsons all the way through 3rd gear. Be safe and have fun everyone

    snipecity10

    Year: 2017 Submodel: GT

    Helpful (3)

  • 5/5

    Installation Time: Weekend

    April 08, 2017

    Omg

    My only complaint is that it Did not come with the throttle body pictured in the ad. Still worth every penny. Car only has 8,000 miles on it and kept debating if it was worth a void Warrenty and $7500. If I had to buy anther car today I would order it when I got home.

    JamesF

    Year: 2015 Submodel: GT

    Helpful (3)

  • 5/5

    Installation Time: Shop Install

    March 07, 2017

    You're gonna need wider tires!

    Beautifully designed and build. Really puts out the power, hang on for the ride!

    OceanCowboy

    Year: 2016 Submodel: GT

    Helpful (3)

  • 5/5

    October 11, 2016

    HOLD ON TIGHTLY!!!

    Excellent instructions, installed in a weekend. The tune was easy to download using the flare program. Outstanding Horsepower and incredible low-end Torque! The following weekend drove the car on a 5 hour trip to Cruising the Coast (20th Anniversary) in Biloxi, Mississippi. The car and blower performed flawlessly the 4 days we were there, and also during the 5 hour trip back. The driveability and power are incredible! Thank you Whipple for an OUTSTANDING blower system and OUTSTANDING tune!!! I can easily light up my 305/35 Mickey Thompsons at will now.....by far the best blower system for 2015 and up Mustangs!!! Thanks again Whipple for a quality system and American Muscle for having everything I need to increase the performance of my 2016 GT! Now the next step is the Phase 2 Whipple kit....

    Gearhead

    Year: 2016 Submodel: GT

    Helpful (3)

  • 5/5

    Installation Time: Weekend

    January 15, 2017

    Stage 2

    I did not make my purchase through American muscle for this only because they didn't offer the stage 2 I wanted. However I still think it should have another review. I did the complete install myself. Took a day and a half. I followed all instructions to a t. What a difference this system makes. Looks great runs excellent perfect addition.

    Chrish1972

    Year: 2016 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $1000+

    January 06, 2017

    Just wonderful

    Got one of the first when the car came out. Had issues at first now it's just unreal the horsepower out of a stock motor tuned by rodeheavers hotrod shop in masontown PA with over 700 HP to the tires on a mustang dyno very fast car now

    underdog

    Year: 2015 Submodel: GT

    Helpful (2)

  • 5/5

    August 13, 2016

    Best supercharger bar none

    I did quite a bit of research prior to purchasing this supercharger for my 2016 Mustang GT with the performance pack. I've had an 1800 horsepower Foxbody Mustang prior to this so I'm not a stranger to race cars or high horsepower. I've also done a tremendous amount of modifications to numerous cars and I've never had a kit with this level of fit, finish and quality. The instructions are very good. They are not perfect because there have been running changes to the cars and even to their kit, however most mechanically inclined people will be able to figure out the minor changes and difference between the written instructions and what you need to do. The Flare prigramming SW and ECU tune that comes with the Whipple supercharger kit is really top-notch. I'm sure there are 'tuners' out there that may squeak a little bit more horsepower out of the motor however I feel confident that having a Ford engineer behind this tune up ensures both reliability and emissions compliance (50 state legal). The drive ability is outstanding and even the driving mode switch still works as it should whereas some aftermarket tunes lose that functionality. I grin from ear-to-ear every time I drive this car now.

    Overkill

    Year: 2016 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Weekend

    June 17, 2016

    Perfect!

    Coyote on steroids. ridiculous power. Be safe. Have fun!

    J

    Year: 2015 Submodel: GT

    Helpful (2)

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