Ultimate 2.5L NA Power Upgrades and Packages

Turbocharger, Supercharger, Performance Cams and Custom Heads

Our goal is to provide 'Real World' Performance Upgrades for your 2.5RS/TS, which will allow you to increase performance up to and over a WRX, using your normally aspirated engine as a base.

The some upgrades require you use premium pump gas (93 Octane) and use a Piggyback ECU or some form of Engine Management.

Also, the power upgrades in this section can be used on your Impreza, Legacy, Legacy Outback, Forester and Baja non-turbo engines. Some power kits are model specific and may require fabrication for proper fitment. Each Turbo or Supercharger kit requires you run premium fuel and upgrade your fuel injectors for safe fuel delivery.

Please contact us to confirm your application.

Please note, all power outputs stated are only approximations, for reference purposes only and will vary depending on each vehicle, its condition, tuning, fuel and modifications. All Modifications are for Off-Road Use Only. All cams, are rewelds, heads and short blocks are custom built and all are considered racing parts, therefore do not carry any warranty period. In no event shall Xcceleration.com be liable for any warranty, labor or service charges whatsoever. Turbo, Supercharger kits and hot cam upgrades will require you to run premium fuel and upgrade your fuel system. For safest fuel delivery, you must upgrade your injectors. Fabrication and additional modifications maybe required, depending on Subaru model.

Please be patient, certain parts are made per order and require time to manufacturer. All parts will be immediately shipped as they become available. All prices do not include any core charges, shipping, taxes or installation charges. All orders are considered 'Special Order' and are paid in full at time of order via wire transfer. All pricing must be verified the day of quote, at time of order, at time of shipping and will be adjusted based on the value of the Dollar Internationally. Any deficiency is immediately due upon billing and before delivery.

PERFORMANCE-RACE CAMS: SOHC MILD or HOT

For Non-Turbo and Turbo Applications

Power of Turbo Charging, with the Reliability of a Non-Turbo!

Our Mild Performance Cams are 'Hardwelded' cams (race quality), designed specifically for street performance cars, which are naturally aspirated. We have designed the cams for 'real world' application, using the factory ECU and OEM intake and exhaust. The camshafts are designed to provide a great idle and increase the overall performance of the engine.

Power over the entire r.p.m. range is greatly improved. You can see gains in HP of about +20HP at redline (6500RPM), on a stock engine. Even more is possible when performance intake, exhaust system and engine management are added.

Our 'Hottest' Performance-Race Cams are designed for naturally aspirated and turbo charged applications. The cams are new 'Hardwelded' cams (race quality). They provide intense mid and high range torque, with a good idle and awesome performance. Engine Management, FPR and increased injector size are required.

• Power will begin at about 3000rpms and continue to redline (6500 RPM).
• You can see gains in HP of about 30HP on a stock engine with engine management.
• When used with a performance intake, header, performance cat, and cat back system, you will see gains in HP of about 50HP!
• If you add our performance cylinder heads, you will see gains in HP of about 80HP!!

See more HP in our turbocharged or Supercharged applications below.

All cams are for 2.5L SOHC engines, '99 +

*Please be patient, cams are made per order and take about 4-6 weeks to deliver. Our Mild cams and Hot cams are new cams, hardwelded (race quality) to our specifications, no core charge is necessary. All shipping is the responsibility of the customer.

Hot Big Valve Custom Cylinder Heads

Designed for

Intense LOW and MID RANGE TORQUE!

Intake: 22% Increased Flow (max)

Exhaust: 41% Increased Flow (max)

Providing over 40 HP+ depending on your application. Our custom hot cylinder heads increase air flow for stunning performance and air velocity for insane low-midrange torque for acceleration. The Hot Cylinder Heads receive our custom porting, polishing and multi-angle valve job, for ultimate performance.

A graduated port finish maintains boundary turbulence for maximum fuel suspension while allowing maximum laminar velocities at the valve seat at all lifts. A properly shaped valve seat/port juncture in conjunction with proper combustion chamber modifications, help ensure maximum volumetric efficiency (cylinder filling). This will show dramatic flow increases at all lifts. Midrange and bottom end power will show insane gains and when coupled with complimentary intake modifications, a large top end increase will also be realized.

Pricing requires using customer supplied cylinder heads as cores.

*$6,999. (using customer supplied heads as cores )

*Price does not include processing fees, and shipping. Please be patient, each engine is made per order and takes about 6-8 weeks to deliver. All shipping is the responsibility of the customer. If new heads are requested, $1500 will be added to above pricing.

TURBO KITS

Subaru 2.5L Engines 1998-2007

Stage1 and Stage2

If you are looking for the ultimate in high performance - this extreme performance packages are for you. Providing the maximum horsepower for the very discriminating and still providing dependability for daily driving. Incorporating all the high performance equipment in a superior performance package, this extreme package includes: an intercooler, blow off valve, and more.

The Stage1 Turbo kit

- Garrett GT28R turbo and manifold pre-assembled
- Down pipe, catless mid pipe and gasket
- Polished uppiping
- High flow front mount intercooler
- Stainless steel braided oil line and fittings
- Stainless steel braided water lines for turbo cooling
- Rising rate fuel pressure regulator
- Blow-off valve (atmosphere)
- Air intake (connects to stock air box)
- Heat shield
- Oil return hose and oil pan fitting
- All hardware, pressure lines, hoses, clamps, and couplers, plus performance exhaust header included and a MAF sensor
- Recommend Fuel Injectors : you need to upgrade your OEM fuel injectors, see options below

Note: Fabrication maybe required for fitment, depending on Subaru model and extra modifications should include upgrading your fuel system and run premium fuel. For safest fuel delivery, you must upgrade your injectors. All orders are considered 'Special Order' and are paid in full at time of order via wire transfer. All pricing must be verified the day of quote, again at time of order, again at time of shipping and will be adjusted based on the value of the Dollar Internationally. Any deficiency is immediately due upon billing and before delivery. Patience is requested. Each Kit is made to order and requires a lead time of about 4 weeks. Contact us for product information.

This is a high quality factory kit that surpasses all the home made kits available. The kit includes a Garrett water cooled ball bearing turbo, front mount intercooler, blow off valve and more.

We recommend 6 PSI of boost for safety and reliability and puts the Horse Power at about 260CHP range at the engine. About 100 horsepower over stock.

For best performance, upgrade your header, converters, catback and stock air box to a performance intake.

Stage1 : $3,900.00 USD plus shipping (call for quote)

Options:

- Piggyback ECU unit (wire-in, live tuning). $630.00 plus shipping

- Fuel Injectors Large capacity fuel injectors (440cc top feed injectors). Call for Prices

- Performance Intake For maximum air flow. $300.00 plus shipping

- Performance Header Improves mid and high RPM torque and power. $500.00 plus shipping

- Performance Converters Super Hi-Flow Catalytic Converters increase Air flow and Power. $650.00 plus shipping

- Performance Cat Back Exhaust Increased Performance. $850.00 plus shipping

Contact us for product information and pricing

The Stage2 Turbo kit

- Garrett GT28R turbo and manifold pre-assembled
- Down pipe, catless mid pipe and gasket
- Polished uppiping
- High flow front mount intercooler
- Stainless steel braided oil line and fittings
- Stainless steel braided water lines for turbo cooling
- Rising rate fuel pressure regulator
- Blow-off valve (atmosphere)
- Heat shield
- Air intake (connects to stock air box)
- Oil return hose and oil pan fitting
- All hardware, pressure lines, hoses, clamps, and couplers, plus performance exhaust header included and a MAF sensor
- New STi Short block, STi pistons, rods, crankshaft; short block fully assembled (does not include gasket kit)
- Recommend Fuel Injectors : you need to upgrade your OEM fuel injectors, see options below

Note: Fabrication maybe required for fitment, depending on Subaru model and extra modifications are required when tuning the boost up above 6psi, upgrade your fuel system and run premium fuel. For safest fuel delivery, you must upgrade your injectors. Piggy back ECU, wire-in, for live tuning. Using STi block will allow the 6psi recommended for the Stage1 Turbo kit to be increased up to 18psi, to see about 400CHP, for an insane power increase! All orders are considered 'Special Order' and are paid in full at time of order via wire transfer. All pricing must be verified the day of quote, again at time of order, again at time of shipping and will be adjusted based on the value of the Dollar Internationally. Any deficiency is immediately due upon billing and before delivery. Patience is requested. Each Kit is made to order and requires a lead time of about 4 weeks. Contact us for product information.

For best performance, upgrade your header, converters, catback and stock air box to a performance intake, as well as, your clutch or torque converter.

Stage2 : $7,200.00 USD plus shipping (call for quote)

Options:

- Piggyback ECU unit (wire-in, live tuning). $630.00 plus shipping

- Fuel Injectors Large capacity fuel injectors (440cc, 600cc or 850cc top feed injectors) and fuel pump. Call for Prices

- Performance Intake For maximum air flow. $300.00 plus shipping

- Performance Header Improves mid and high RPM torque and power. $500.00 plus shipping

- Performance Converters Super Hi-Flow Catalytic Converters increase Air flow and Power. $650.00 plus shipping

- Performance Cat Back Exhaust Increased Performance. $850.00 plus shipping

Contact us for product information and pricing

SUPERCHARGER KITS

Subaru 2.5L Engines 1998-2007

Stage1 and Stage2

Stage2 Intercooled Kit shown above

Using above dyno numbers:

2005 Impreza 2.0L GX / stock power 90 kw = 95 whp = 122 chp

2005 Impreza 2.0L GX / stock torque 141 s_Mn = 104 wtq = 135.8 ctq

8psi : 119 kW = 161 whp = 209 chp / 71.31% increase

8psi : 260 s_Mn = 192 wtq = 249.6 ctq / 83.80% increase

13psi : 126.3 kW = 169.4 whp = 220.2 chp / 80.49% increase

13psi : 290 s_Mn = 214 wtq = 278.2 ctq / 104.86% increase

(stock exhaust header, converters and catback used for both 8psi & 13psi examples)

Applying above power increases to USDM 2.5L SOHC Engine

Stock Power 2.5L engine : 165 chp / 166 ctq

8psi : 270 chp / 300 ctq

13psi : 300 chp / 340 ctq

Developed and manufactured utilizing the C30-74 Rotrex Supercharger, the Stage1 kit will put your non-turbo power into the same league as a WRX!

The Stage2 Intercooled kit produces more than 80% gain in horsepower over the stock 165chp and about 100% power gain in torque. This can be safely achieved with performance exhaust header, converters and catback.

The power delivery from the Rotrex Supercharger is extremely smooth with immediate boost without lag. With an OEM style installation this kit will provide you with a stealth look and immediate performance from your car.

Benefits of Stage1 Supercharger Kit
High quality Supercharger Installation
Designed to suit an internally stock factory engine
Does not require upgrading exhaust header, converters or catback
Over 70% power increase on a stock engine with minimal boost pressure

Stage1 Supercharger Kit : 8psi

Parts Included:
- Rotrex C30-74 Supercharger @ 8psi
- Rotrex Self contained Oiling system with Oil cooler
- Supercharger CNC machined Mounting bracket with idler pulley setup
- 5PK Ribbed drive belt
- Aluminum Intake piping with silicon hoses and hose clamps (MAF adapter plate supplied for MAF car)
- Recirculating bypass valve
- All high quality Fasteners and hoses required for Installation and a MAF sensor
- Recommend Fuel Injectors : you need to upgrade your OEM fuel injectors, see options below

We recommend 8psi of boost for safety and reliability and puts the Horse Power at about 270CHP. About 100 horsepower over stock. This makes the car very fast.

Note: Fabrication maybe required for fitment, depending on Subaru model. You will need to run premium fuel and upgrade your fuel system. For safest fuel delivery, you must upgrade your injectors, plus consider upgrading your converters, and catback for increased performance. You will need to increase your injector size, modify your fuel rails and fuel system plus consider upgrading your converters and catback, as well as, your clutch or torque converter. All orders are considered 'Special Order' and are paid in full at time of order via wire transfer. All pricing must be verified the day of quote, again at time of order, again at time of shipping and will be adjusted based on the value of the Dollar Internationally. Any deficiency is immediately due upon billing and before delivery. Each Kit is made to order and requires a lead time of about 4 weeks. Contact us for product information.

For best performance, upgrade your header, converters and catback.

Stage1 : $4,490.00 AUD plus shipping

(contact us for drop shipping quote)

Contact us for product information and current US Dollar (USD) pricing

Options:

- Piggyback ECU unit (wire-in, live tuning). $600.00 USD plus shipping

- Fuel Injectors Large capacity fuel injectors (440cc top feed injectors). Call for Prices

- Air to Water Intercooler Kit includes: High efficiency Water to Air Intercooler with front mounted radiator, high flow water pump and high quality fasteners and hoses for installation. $2100.00 AUD plus shipping, must convert AUDs into US Dollars

- Performance Header Improves mid and high RPM torque and power. $500.00 USD plus shipping

- Performance Converters Super Hi-Flow Catalytic Converters increase Air flow and Power. $650.00 USD plus shipping

- Performance Cat Back Exhaust Increased Performance. $850.00 USD plus shipping

Stage2 Supercharger Intercooled kit : 13psi

Parts Included:
- Rotrex C30-74 Supercharger @ 13psi
- Rotrex Self contained Oiling system with Oil cooler
- Supercharger CNC machined Mounting bracket with idler pulley setup
- 5PK Ribbed drive belt
- Aluminum Intake piping with silicon hoses and hose clamps (MAF adapter plate supplied for MAF cars)
- Recirculating bypass valve

- All high quality Fasteners and hoses required for Installation and a MAF sensor
- High efficiency Water to Air Intercooler with front mounted radiator and high flow water pump
- Recommend STi Short block: you need to upgrade your engine block and internals to handle 13psi safely, see options below

- Recommend Fuel Injectors : you need to upgrade your OEM fuel injectors, see options below

---

Note: Fabrication maybe required for fitment, depending on Subaru model and extra modifications are required when tuning the boost above 8psi. You will need to run premium fuel and upgrade your fuel system. For safest fuel delivery, you must upgrade your injectors, plus consider upgrading your converters and catback, as well as, your clutch or torque converter for increased performance. Kit includes STi Short block: STi pistons, rods, crankshaft; short block fully assembled (does not include gasket kit) is required to run 13psi+ safely. Puts the Horse Power at about 300CHP range at the engine. All orders are considered 'Special Order' and are paid in full at time of order via wire transfer. All pricing must be verified the day of quote, again at time of order, again at time of shipping and will be adjusted based on the value of the Dollar Internationally. Any deficiency is immediately due upon billing and before delivery.Patience is requested. Each Kit is made to order and requires a lead time of about 4 weeks. Contact us for product information.

For best performance, upgrade your header, converters and catback, as well as, your clutch or torque converter.

Stage2 : $6,490.00 AUD plus shipping

(contact us for drop shipping quote)

 

Contact us for product information and current US Dollar (USD) pricing

---

Options:

- Piggyback ECU unit (wire-in, live tuning). $600.00 USD plus shipping

- Fuel Injectors Large capacity fuel injectors (440cc, 600cc or 850cc top feed injectors) and fuel pump. Call for Prices

- Performance Header improves mid and high RPM torque and power. $500.00 USD plus shipping

- Performance Converters Super Hi-Flow Catalytic Converters increase Air flow and Power. $650.00 USD plus shipping

- Performance Cat Back Exhaust Increased Performance. $850.00 USD plus shipping

- STi Short block, includes: STi pistons, rods, crankshaft; short block assembled (does not include gasket kit). $3,300.00 USD plus shipping

---

---

Why Supercharge?!

The primary advantages of supercharging over turbo charging are instant throttle response and more boost at low engine speed. Because a supercharger is belt driven off the crankshaft, it can deliver boost the instant the throttle is opened.

The Rotrex C30-74 Supercharger is a Centrifugal Supercharger – which delivers immediate boost in a linear fashion in relation to engine speed– the faster the engine speed the more boost pressure is produced. This type of Supercharger gives you more power as speed increases.

The Rotrex supercharger adds anywhere from 75% to 100%+ more Power and Torque to an otherwise stock engine.

Rotrex manufactures a compact, efficient, highly reliable and low noise supercharger boasting state of the art traction drive technology. The traction drive transmits power through friction forces between its rolling elements.

Benefits of the Rotrex Supercharger

• Extremely adiabatic efficient (up to 82%) equals great cruising gas mileage
• Superior low end torque compared to other centrifugal superchargers
• Ultra-high mechanical efficiency (up to 99.2)
• High durability
• Superior throttle response
• Excellent fuel economy
• Engine durability
• Top performance
• No turbo lag

Supercharging will result in the following

* Substantial increases in power and torque - gains of over 100% can be safely achieved.
* Improved low down performance.
* Dramatically improved acceleration.