ATP's range of bolt-on Garrett turbos are designed to provide the performance of a dual ball-bearing turbocharger with the convenience of a bolt-on installation. The ATP Garrett turbochargers easily install in place of the tiny stock journal bearing turbo, and will work with the stock turbo manifold and stock downpipe (though an aftermarket downpipe is highly recommended).
Every ATP Mazdaspeed3 Garrett turbo features a high speed balanced dual ball bearing CHRA which is mounted into a set of CNC machine ported housings, optimized in every aspect for maximum flow and efficiency. ATP Garrett turbochargers also include all the necessary hardware to seamlessly attach the turbo to your stock Mazda oil and coolant lines.
When coupled with the necessary supporting modifications, ATP's Garrett upgrades for the Mazdaspeed3 will produce smooth and consistent power delivery with a minimal increase in lag. Keep in mind, ATP did not design these turbos to produce 'dyno-queen' peak numbers; they're designed to produce higher levels of usable power under a multitude of high performance circumstances. Whether you are looking for a high-horsepower daily driver, a weekend warrior competition car, or a track dedicated racer-- ATP has a Garrett turbo perfect for any application.
ATP recommends that you use a bellmouth downpipe with their bolt-on Garrett turbos for optimal performance. While a stock downpipe may suffice, stock-type downpipes may not allow optimal flow for these turbos, restricting safe horsepower and boost levels. This can result in boost "creep," "spiking," and inaccurate boost control. The Turbo XS Bellmouth downpipe for the Mazdaspeed3 would be an excellent choice for use with this turbo.
In addition, ATP requires their high-flow turbo inlet pipe to mate to the massive 4" Garrett turbo compressor. When coupled with a bellmouth downpipe, the ATP turbo inlet promotes faster spool and higher power numbers with less pressure turbulence at the manifold.
Bigger than the GT28, ATP's GT3071R has slower spool, but will handle up to 450 crank horsepower on the Mazdaspeed3. This is efficient up to 22psi and a great choice for those that don't mind adding a bit more lag for exchange for more top-end performance. The GT3071R is simply the fastest spooling turbo on the market if you are looking to make power in excess of 450 horsepower.
-Fuel system modifications & ECU tuning a required with these and any other aftermarket turbos.
-ATP recommends a 3" bell-mouth downpipe to maximize their Garrett turbochargers.
-The ATP 3" turbo inlet is required to install these turbos.