Home | WRX/STi/XT/GT/Baja Turbo | Impreza 2.5 | Legacy/Forester/Baja | Specials | Gallery | Contact Us | Order Form
 

2008+ STi Turbo Performance Stage4 Kit

(Approximately 400 T.Q. ) Please note, all power outputs stated are only approximations, for reference purposes and will vary depending on each vehicle, its condition, fuel and modifications.

Kit Contains:

  1. AccessPort ECU Upgrade: The Accessport is a mult-featured ECU reprogramming device for your Subaru WRX or STi. The Accessport comes loaded with multiple maps for various setups (i.e. stock, turboback exhaust, etc.). It also allows for custom tuning through Tuners or self-tuning by downloading Cobb's Racer Tuner program. Your Subaru can easily be returned to stock at any time, as the Accessport retains your stock base map. In addition, the Accesport functions as a scan tool, diagnosing and clearing check engine lights (CELs) and other vehicle parameters. The Accessport's color display allows the user to display a variety of parameters including dynamometer testing and real time data.
  2. Short Ram Intake: Using the same design feature of the velocity stack found on the inlet to the MAF sensor in the factory box this cast aluminum intake carries the velocity stack radius outward to mate up with a 4.5" high flow cone filter.
  3. Blow Off Valve
  4. High Output 255 liter fuel pump
  5. Adjustable Fuel Pressure Regulator
  6. Parallel Fuel Rails
  7. 850cc injectors
  8. Custom GT30r (hi-flow) turbocharger
  9. *STi Stage4 DOHC Big Cylinder Heads: Custom Stage4 STi VVT cams with a 0.415 inch lift. Custom Stage4 ported and polished heads. *Requires customer sending their heads to us for modification. Please be patient, each head package is made per order and takes about 8-10 weeks to deliver. All shipping is the responsibility of the customer. Please be patient.
  10. Large Front Mount Intercooler: The bar and plate intercooler core is designed to provide maximum cooling efficiency. The end tanks are aluminum and precision welded to the thick racing upgraded cores.
  11. Custom 4 into 1 Stainless Steel Header and Uppipe Combo: Designed to significantly gain horsepower and torque.
  12. Turbo-Back Exhaust System with Two Cats, with two mufflers and electric cutout system.
    SPECIAL NOTE: THE STAGE4 STi KIT REQUIRES CUSTOM TUNING OF THE CHIP TO ACCOMPLISH FULL BENEFITS OF THE PERFORMANCE STi HEADS AND CAMS. TO ACCOMPLISH THIS, WE MUST HAVE YOUR CAR TO TUNE IT. WE PROVIDE COMPLETE INSTALLATION AND TUNING ALSO, WHICH WILL TAKE ABOUT10-12 DAYS OF WORK. PLEASE CONTACT US FOR DETAILS ABOUT TUNING THE CHIP AND/OR INSTALLATION. WE DO NOT RECOMMEND RUNNING OVER 18PSI WITHOUT A BUILT BLOCK.

    All power outputs stated are only approximations, for reference purposes only and will vary depending on each vehicle, its condition, fuel, modifications and tuning. All engine modification components, except those that are exempt, have been designed and are intended for off-highway application. These components are for racing vehicles only, which may never be used on public roads and highways. Federal and many state laws prohibit the removal, modification, or rendering inoperable of any device or element of design affecting vehicle emission or safety in a vehicle used on public highways. Violation of such laws may subject the owner or user to a fine or penalty. Installation of this part may void the warranty coverage, if any, on your vehicle. Vehicles modified by the use of performance parts may no longer be lawfully used on public highways. User assumes all cost and risks associated with these items.


ECU Upgrade

High Flow Short Ram Air Intake

 

 

Large Front Mount Intercooler

Custom 4 into 1 Stainless Steel Header
and Uppipe

 

 

 

Blow Off Valve

Adjustable Fuel Pressure Regulator

High Output 255 liter fuel pump

 

Parallel Fuel Rails

Custom STi Stage4 Big Valve DOHC Cylinder Heads and Cams

 

 

 

850cc Injectors

Custom Performance Turbo

Downpipe with Super High Flow Cat

Mid Pipe both with Super High Flow Cat

Stainless Catback Exhaust

Electric Exhaust Cutout Kit includes 'Y' pipe, electric valve and switch.

Adds 15hp when open!

This kit is designed to better your cars performance and feel. The cutout works by welding into your stock or modified exhaust. They can be placed anywhere after the headers. To open the cutout you press a switch, which opens cutout, releasing your exhaust. This enables you to bypass your muffler, increasing horsepower and giving your car an extremely throaty rumble.

Hear Mild to Wild



NOTE: Under Federal EPA regulation, replacement of original catalytic converters is allowed only if the original converter(s) is missing, or the vehicle has more than 50,000 miles or is at least five years old and the need for a replacement has been established and documented, or a local inspection program has determined the existing converter is in need of replacement. Please note that no aftermarket catalytic converters are legal for installation in California on OBD II vehicles (some 1994 & 1995, and all 1996 and later vehicles). There is a chance of seeing a CE Light: Inefficient cat code when running less than two cats, so if seen, contact us for the mechanical fix (sold separately). All performance parts have been designed and are intended for off highway application only. Installation of these parts on a vehicle intended for use on public roads may violate state or federal laws and regulations including those relating to emissions requirements and motor vehicle safety standards.



   

2008+ STi Stage 4

$21,200.00 + shipping Order Now!

**Note: Please replace the following OEM gaskets when installing the kit: header, uppipe and turbo gaskets. Xcceleration.com highly recommends you install a boost gauge, exhaust gas temperature (EGT) gauge, and air/fuel gauge to monitor your car and ensure safe, reliable performance. Gauges are sold separately



Home | WRX/STi/XT/GT/Baja Turbo | Impreza 2.5 | Legacy/Forester/Baja | Specials | Gallery | Contact Us | Order Form