This kit vastly increases the performance potential of the GReddy system while also increasing its reliability and durability.

This kit is available in limited quantity and on a per-order basis.

The price is ^$1900 and includes all of the items pictured and listed below.

Please e-mail your request for this upgrade kit: upgradekit@mazdamaniac.com

Requests will be processed in the order they are received. 
Please allow 12 to 16 weeks from receipt of payment for delivery.

The MazdaManiac GReddy Turbo Upgrade Kit includes:

¹⁾ A specially modified Garrett GT3071R(WG) turbocharger with a machined compressor back plate and specially adapted flanges to fit the GReddy manifold and downpipe and a 7 PSI wastegate actuator and bracket.
²⁾ New inlet and discharge pipes with appropriate silicone adapters (available in several different colors to match your setup).
³⁾ A new oil drain pipe for the turbo.
⁴⁾A blocking plate for the secondary air discharge pipe or an extender if you intend to keep the secondary air system.
⁵⁾ Water fittings to utilize the OEM water lines for the throttle body to cool the turbo.
⁶⁾ An AN-3 oil inlet fitting with a .035" restrictor installed.
⁷⁾ An AN-3 to AN-3, 3' oil line.
⁸⁾ An AN-3 to 1/8 pipe fitting to replace the outlet in the "T" fitting at the oil pressure sender.
⁹⁾ A hardware pack with new M8 1.25 studs for the turbo and downpipe, an inlet gasket for the turbo, a drain gasket for the turbo oil drain, stainless nuts for the turbine in and out, M8 1.25 socket-end bolts for the oil drain fitting, 4 spiral hose clamps, two 14mm, right-angle banjo fittings for the 3/8" water inlet and outlet on the turbo, two 3/8" barbed hose couplers for the interface to the throttle body coolant lines and hardware for the wastegate actuator.
Anything not included in the kit is reused from the GReddy kit.
¹⁰⁾ A double-layered heat shield pad and braided hose shielding.

Why upgrade?

¹⁾ Power.

The turbo included in the upgrade kit is capable of flowing enough air to produce up to 475 horsepower at the crank. That is over 400 horsepower at the wheels.
However, getting there will require major upgrades to other areas of the drivetrain, including but not limited to fuel injectors, ignition coils, intake and exhaust piping, fuel pump, cooling system upgrades, transmission upgrades, differential upgrades and suspension.
It is not an unrealistic expectation to get well into the 300+ HP^* range without serious modification with this kit.
The primary goal is to take the existing GReddy kit and give it continuous power to redline and add 25 to 75 HP^* to the numbers people are seeing with the GReddy kit alone.

This Garrett turbo is so efficient, it is not uncommon to see charge temps that are only 15 - 20 degrees above ambient! And, even though it is a larger turbo and flows more air, it spools up to full boost just about as quickly as the TD06-18G turbocharger included in the GReddy kit. You can be in full boost by 4000 RPM with a properly configured boost controler.

²⁾ Reliability.

The turbo included in the GReddy kit is a journal bearing turbocharger. This type of bearing relies heavily on the flow of oil for cooling and lubrication. However, because of the low placement of the turbocharger, it is easily swamped by oil flow since the drain is so short and relatively horizontal. This requires the use of an oil restrictor to avoid having oil introduced into the turbine or compressor, which would cause smoke.
Restricting the oil flow to a journal bearing has some unintended consequences.
Since the volume of oil is reduced, its cooling effect is greatly reduced, causing premature failure of the bearings - especially after prolonged idle after hard running. Shutting down while hot is even more detrimental.
The ball-bearing turbo included in the upgrade kit has a significantly lower oil requirement, making a restrictor not only acceptable but necessary. This eliminates the oil loading that can lead to smoking.
The heat in the turbo is actually controlled by the flow of water from the engine cooling system, which stabilizes the temperature of the bearings - not only when the motor is running, but also after it is turned off via convection.

307 RWHP on a DynoJet dynamometer.

This was was realized with a well-known, 3rd party engine management, running a very safe tune with only 9 PSI of boost peak. Click to see a larger version.

316 RWHP on a DynaPack dynamometer.

This was was realized with the GReddy E-Manage Ultimate, running a slightly more aggressive tune with only 9 PSI of boost peak. Click to see a larger version.

Installation instructions can be viewed here:

MazdaManiac GReddy Turbo Kit Upgrade Installation Instructions

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