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Procharger Stage II Intercooled Supercharger System (99-04 GT)

Market Price $6,758.90 You Save 17% ($1,126.31)


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  • Item 80818
  • MPN# 1FE212-SCI

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Features & Details

  • 60-70% Horsepower Increase
  • P-1SC Supercharger
  • 8-10 psi of Boost
  • 3-Core Air-To-Air Intercooler Included
  • CARB EO # D-365-5
  • Fits 1999-2004 GT and Bullitt Mustangs
More Horsepower! The stock GT Mustang came with a decent 260 Horsepower and 302 lb/ft of Torque from the factory, but after installation a ProCharger-equipped 4.6L GT Mustang can make 60-70% more horsepower at the flywheel. Thanks to the industry’s coolest charge air temperatures, the unmatched power gains are delivered with maximum reliability and everyday drivability.

High Capacity Intercooler. If you have the desire to continue modding your Mustang even after adding a ProCharger Supercharger, then this is the Kit for you. The 3-core air-to-air intercooler included with the Stage II Kit has a higher capacity than the High Output (HO) Kit. This Stage II kit will accommodate additional modifications as you continue to transform your Mustang into the highest horsepower beast possible.

Supercharger Kit. The ProCharger Stage II Intercooled System comes 100% complete, and includes ProCharger self-contained supercharger, air-to-air intercooler, intercooler tubing, brackets, 39 lb/hr fuel injectors and ProFlow bypass valve.

CARB Certified. Best of all this ProCharger High Output Intercooled Supercharger System is 50-state smog legal under CARB EO # D-365-5.

Application. This ProCharger Stage II Intercooled Supercharger System is specifically designed for use on the 1999 to 2004 GT and Bullitt Mustangs equipped with the 2 valve 4.6L modular engine.

Please Note. Procharger Supercharger Systems are built to order for our customers and accordingly, we require you to submit additional information about your vehicle using this form. Because of this there is a 14 day lead time on orders once your information is received.

Once the Customer Information Form is filled out, please email it to with your Order Number in the Subject line, so the order can be processed.

Fitment: 1999 2000 2001 2002 2003 2004 Details

Installation Info
Tech Specs
  • P-1SC self contained supercharger
  • Boost (PSIG): 8-10
  • Includes 3 Core Air-to-Air Inter Cooler
  • Includes 39 lb/hr fuel injectors
  • Includes ProFlow bypass valve
  • Includes intercooler tubing and brackets
  • Professional Installation Recommended
Will it fit my Mustang?
  • Bullitt - 01
  • GT - 99, 00, 01, 02, 03, 04

Most Helpful Reviews

Simply AMAZING!!!

I LOVE my Procharger on my 2002 Mustang GT! Putting down 412 RWHP and 419 FT LBS of torque on a moderate tune right now I couldn't be happier! Installation was a huge pain In my butt lol there was plenty ...

Read More
Helpful (5)

great product

super easy to install, no problems at all and made my car 2x faster

Helpful (1)

Overall Rating 5 out of 5 stars
Read All 3 Reviews

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16 Questions / 14 Answers

Ask a Question

Do I need to change anything before install? I have an 03 Mustang GT with 70,000 miles on it. Everything is in good order but I was wondering if there is anything I need to change before I install the procharger?


  • Well, a smart thing to do before installing this supercharger. Would be to either get a block with all forged imternals. Or buy forged imternals and install them into your stock block. That will save you money in the future. My mustang threw a rod even without a supercharger.


    Good Answer (0) (1)

Answer This Question I need this answered (0) (0)

how much hp will this supercharger add? an number not 70%


Show 2 more answers Question Resolved

Headers? Can i use long tube headers or do i need to go shorties? would i have to cut into the headers?


  • You can use long tubes. Don't waste your money on shorties especially if SC'd. You need to get those exhaust gasses out as well as forcing them in!


    Good Answer (1) (0)

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what supercharger is more highly recommended for my mustang roush stage 2 2003?


  • I personally would recommend keeping your car as Roush as possible. If you must go with a turbine style supercharger the Vortec is the most efficient brand in that style. Keep in mind that the water to air intercoolers work best and in my opinion are easiest to install


    Good Answer (6) (0)

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Should I get my engine rebuilt before installing this? I have a 2001 GT, it's got 134,000 miles on it but theres nothing wrong with it and it hasn't been driven hard. Would it be a good idea to get my engine rebuilt first?


  • I think that you should probably have a few things checked like compression in the cylinders and a leak down test to see what condition the valves and guides are in.If there is a weak spot the super charger will find it. The rings and rod bearings take the brunt of the increased force as does the head gasket. If your engine is as tight as you say it is you may be ok. But check to be sure.


    Good Answer (12) (1)

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supercharger do i need to remove my underdrive pulleys and go back to stock To install this supercharger


  • Absolutely! The underdrive is a plus when NA. But, when SC the UDPs are a negative as the blower spins slower. Plus the tune included is assuming that at a certain RPM and the provided pulley on the SC you are making at an approximate boost level. Also, the included belt assumes a stock engine damper/pulley. Put the stock pulley back on and sell your UDPs on Ebay. That's what I did when i went FI. By the way you will LOVE this centri blower. Makes boost linearly and is very easy to control vs the roots type. Easier on the internals. Better mileage, too. Good luck on your choice!


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Customer Reviews (3) Write a Review

Overall Rating 5.0

out of 5 stars

Installation Time:Full Day

  • Performance Gain 5 5
  • Fit 3.666667 3.7

  • 5/5

    Installation Time: Weekend

    March 05, 2014

    Simply AMAZING!!!

    I LOVE my Procharger on my 2002 Mustang GT! Putting down 412 RWHP and 419 FT LBS of torque on a moderate tune right now I couldn't be happier! Installation was a huge pain In my butt lol there was plenty of blood sweat tears and swear words involved, but it was so much more worth it in the end! The tune that it comes with from diablosport does run a little bit lean, so I would make sure before you buy the kit that you can take it up to have it Dyno tuned soon after the install. Also, the fuel pump that is included in this kit is a little bit better than the stock pump, but it still does not do the job that is required from the 39# injectors that come in the kit as well. So buy a Kenne Bell Boost-a-pump to make sure that the engine is getting the required ammount of fuel it needs. ALSO, the kit isn't just drop in and go. At least on my car, there were some very tight fits that needed to be grinded down or cut off, etc. it's not a very easy job! Just keep that in mind. But overall, I seriously could not be happier! Totally worth the money, and I wiould defiantly recommend it to anybody looking to boost their New Edge GT.


    Year: 2002 Submodel: GT Las Cruces, NM

    Helpful (5) (0)

  • 5/5

    Installation Time: Afternoon

    May 18, 2016

    great product

    super easy to install, no problems at all and made my car 2x faster


    Year: 2003 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Full Day

    December 05, 2012

    proCharger Stage II Intercooled Supercharger System

    i installed this procharger my self there was a few unessesary words involved but i got her in and boy did i not regret it. this procharger really have me a diffrence lets just say it made my dream come true to have a 9.6 second car.


    Year: 2001 Submodel: GT

    Helpful (16) (34)

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