GT35R Bolt On Turbo Kit for Mazdaspeed3 (2007 thru 2014)

The GT35R Bolt On Turbo Kit brings Garrett’s proven GT3582R turbocharger to the Mazdaspeed3 platform in a direct-fit package built for owners chasing serious top-end power. This kit is engineered for enthusiasts running heavily modified 2.3L engines who need a turbo capable of supporting big horsepower without giving up efficiency at high boost. If you’re building toward the upper limits of what the factory engine architecture can handle, this is the turbo built to get you there.

Specifications

• Turbo Model: Garrett GT3582R
• Turbine Housing A/R Ratio: 0.82
• Exhaust Housing: ATP proprietary exhaust housing
• Wastegate: Internal wastegate (standard)
• HP Capacity: 550-600 crank HP on a highly modified engine
• Boost Efficiency: Efficient up to over 30 psi
• Wastegate Pressure Options: Standard, 7psi (.5 bar standard), 14psi (1 bar), 21psi (1.5 bar High pressure), No Actuator (External Wastegate Option Selected)
• External Wastegate Option: Ext WG exhaust housing available (Tial MVS Wastegate sold separately)

Performance & Application

This kit is purpose-built for the Mazdaspeed3’s 2.3L turbo engine, designed to bolt directly to the factory exhaust manifold and downpipe. The GT3582R is a great spooling turbo capable of producing between 550 and 600 crank HP on a highly modified engine for those willing to run that level of boost. It spools about 700 to 800 RPMs later than the GT3071R on the same 2.3L engine, trading a bit of low-end response for a substantial increase in top-end power and efficiency at high boost levels. There is no substitute for the power and response this turbo delivers once spooled.

Compatibility & Fitment

• Mazdaspeed3 (2007 thru 2014)
• 2.3L turbo engine
• Bolts up to factory Mazdaspeed3 exhaust manifold and downpipe

What’s Included

• Garrett GT3582R turbo with ATP proprietary exhaust housing and internal wastegate
• All coolant and oil connections to connect turbo to factory lines

Frequently Asked Questions

What HP can the GT35R support?

This turbo can produce between 550 and 600 crank HP on a highly modified 2.3L Mazdaspeed3 engine if you run that level of boost.

What is the A/R ratio of the turbine housing?

The turbine housing uses a 0.82 A/R ratio.

How does spool compare to the GT3071R?

The GT35R spools about 700 to 800 RPMs later than the GT3071R on the same 2.3L engine.

Does this kit include the inlet pipe and downpipe?

No, this kit does not include the 3″ inlet pipe and 3″ downpipe necessary to complete a full kit and maximize the turbo.

For Mazdaspeed3 owners building a highly modified 2.3L engine and chasing serious top-end horsepower, the GT35R delivers the boost efficiency and power ceiling few other bolt-on options can match.