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500 HP Twin Turbo Z Power Package Includes

Z1 GT525 Turbo Kit             -OR-               Z1 GT535R Turbo Kit

Z1 Side Mount Intercoolers


Greddy Profec Boost Controller

Nismo 615cc Injectors with Early Style Fuel Rail Adapter Kit

Z1 EPROM Upgrade


Z1 2.5" Stainless Testpipes

Z1 2.5" Stainless Downpipes

Z1 Quarter Glass Decals

When you are ready to go above and beyond the power output stock turbos can produce, but still want the response and reliability of a stock Twin Turbo Z, Z1 offers the 500 HP Twin Turbo Z Power Package. This kit is proven to increase output ~100 rwhp over what stock turbos can provide.

To transfer this added Horsepower to the wheels Z1 recommends the Z1 TT Street Clutch Kit with the six puck disc option. Also, to increase the power output further, consider the Z1 Lightweight Flywheel which can be purchased with the clutch kit at a discounted package price HERE.

The 500 HP Twin Turbo Z Power Package is sold based on the assumption that basic upgrades are already be in place (ECU Upgrade, Intake, Exhaust, etc.). If not they should be purchased before moving forward with the 500 HP Package. These basic upgrades can be found in our 400 HP Twin Turbo Z Power Package or sold separately here on

Installation available at Z1 Motorsports - Email:

$200 Core Charge applies to Z1 GT525 Turbo Kit - View our Core Return Policy and Form. Please note: Form MUST be included with all Core Returns.

Available Options:


Fuel Octane:

Decal Color:

Turbo Kit:


Reviews Ask A Question About This Product

Questions our customers have asked...

at what pressure would I get 500 at the crank

Response: There are a lot of external factors that can affect this but we see cars on our dyno make this power ~420 rwhp at around 14-15 psi with Z1 GT525 turbos the mods included in this package (92-93 octane pump fuel). Of course we are assuming that the car is running properly and you have a free flowing catback exhaust. We do recommend a dual intake at this level : (Link)