HPA Motorsports Inc. - TSI Performance

Stage 1 ECU Tune

* Increase of 45 HP
* Increase of 75 ft-lbs of Torque

* Volkswagen Factory Safety Limiters Retained

* Able to adjust timing and fuel for different fuel grades. No " switchable " program needed.

* Developed on our Superflow AWD dyno and tested on the road for peak performance and ultimate drivablity.

* Specific US/Hong Kong and Canada/China tunes
for optimum timing calibration

* Flashable at any of our dealers or through the loaner tool program.

*Loaner tools only available to North American Customers not serviced by Dealer locations.

TSI FWD specific downpipe

Removed the Factory Cat directly off the turbo for substantial increase in flow.

* Factory 02 Sensor placement

* Full stainless steel construction

* 100 cell count High Flow Catalytic Converter

* Bolts to factory locations, with adapter step down included to work with factory rear muffler section.

*Substantial weight savings

*CNC Steel Turbo Flange

*3”mandrel .065 wall

Precision tig welded

The fabricators at HPA set their sights on the TSI downpipe to optimize backpressure and allow the calibrators the headroom to maximize both power and torque.

The resulting 3” downpipe is a fabrication assembly designed around functionality and durability. .065 wall T304 stainless steel mandrel tubing is precision tig welded for an ultra clean look. Our CNC formed hanger and laser cut flanges mate this assembly to the chassis and will withstand the thermal conditions the turbo will generate. Our flex couplings feature an internal stainless steel interlock liner that facilitates smooth flow of high temperature exhaust gases.

HPA street downpipes come standard with our 100C high flow cats. The same cats used on all HPA twin turbo vehicles.

Knowing the limitations on the IHI ( K03 ) turbo the TSI comes equipped with we sought out to upgrade the turbo while maintaining factory plumbing and lessen the install burden for shops and home mechanics alike.

The factory Borg Warner K04 turbo that is equipped on the Golf R / S3 is a much more robust turbo with a higher operational boost range, while still mounting on and integrating seamlessly with the stock compentry.   We modify the OEM K04 compressor cover, to allow the factory K03 diverter valve to be installed in the OEM location via a CNC port adapter, saving the consumer from purchasing unnecessary plumbing and mounts to complete the installation.

We also remove the turbo muffler to accomodate an HPA designed CNC machined fitting allowing the outlet pipe of the turbo to be rotated to clear the block, and to increase airflow out of the unit.   This has the added side effect of a less muffled and smoother air stream exiting the turbo.

A laser cut block off plate for the OEM S3 PCV system is included with all K04 kits as this port is not required on a TSI motor.

Each kit will include a TSI stage 2 software tune as developed on our winning SCCA World Touring Car engines, allowing for maximum horsepower, drivability and engine longevity.

New Gaskets, studs, bolts, silicone coupler and clamps are included with every kit.

TSI K04 conversion kit

* Factory Diverter valve placement via CNC machined Diverter Valve port Adapter.

* Genuine Borg Warner K04 turbo.

* CNC Machined turbo outlet with muffler removed for increased flow and better acoustics.

* CNC Machined compressor port for OEM diverter valve location.

*Increased useable RPM range with higher boost pressure available.

* PCV Blockoff plate

* K04 Specific TSI ECU file based on our race winning SCCA World Challenge Touring Cars.

* New Gaskets, studs, nuts and silicone included for installation.

Precision machined, this direct fit Intercooler will optimize intake temperatures for your tune 2.0T engine, while its 50mm thick Bar and Plate cooler core will only minimally impact airflow over your radiator. A special heat expelling coating has been applied to the cast aluminum end tanks to optimize this package.