ATP GT3076R Turbo - WRX 08-14 / STI 15-22
The Garrett GT Ball Bearing GT3076R, the benchmark 500+ HP capable dual ball-bearing turbo, is now available in a drop-in package for the Subaru WRX/STI! The turbo assembly takes no more than 1-2 hours to install in place of the stock journal bearing VF unit is made possible by a high-flowing GT-inspired ATP exhaust housing and a series of custom-engineered components built to suit the installation.
*2008 to 2014 WRX (DOES NOT apply to STI model) requires either (A) an aftermarket top mount intercooler with a hose connection to the compressor outlet, or (B) a front mount intercooler
*2015+ WRX STI (equipped with EJ25 engine) compatible
Each GT drop-in turbo package consists of a Garrett factory-assembled and high-speed balanced dual ball-bearing CHRA which is then assembled into a set of CNC machine-ported housings that have been optimized in every aspect for maximum flow and efficiency.
All accompanying oil and coolant supply components included in each kit have been designed to properly and seamlessly bridge the Garrett GT turbo to the EJ engine so that the fit is as close to OEM as possible.
Just bolt the turbo on, add fueling and a good tune, and prepare for a blast of acceleration. Garrett GT turbos offer more then just peak HP numbers. These GT turbos offer more torque area under the power curve and more accessible power than any other turbo series out there.
We do recommend that you complement your GT bolt-on turbo with a nice high-flowing bellmouth downpipe and a high-flowing inlet pipe to effortlessly channel air in and out of the turbo. Although every bolt-on GT turbo ships with a 3" inlet, we do provide a stepdown sleeve just in case you're forced to use the stock 2.25" inlet hose. However, turbos, especially higher-flowing units, love as much inlet flow as possible. This promotes both quicker spoolup and better HP, with less boost pressure at the manifold. The 3" downpipe and bigger inlet is critical for reaching peak efficiency on the GT turbo. Please also be aware that some downpipes, such as the stock catted downpipe, have a "no-flow" door at the wastegate flapper area. This type of downpipe may not allow the wider-swinging wastegate valve to open all the way, thus causing the possibility of a "boost-creep" condition or an uncontrollable rise in boost.
The GT3076R is a great match for the 2.5L that has great spoolup and enough airflow for 500+HP. The GT3076R makes boost about 300 to 400 rpms later than the GT3071R but keeps pumping where the GT3071R starts to run out after 450HP. A lot of the boost is available even at low to medium throttle. Dual ball-bearings means boost recovery between gearshifts is awesome, with full boost ready even before the upshift is complete as the car lurches forward with sheer enthusiasm at the onset of each gear. The 2.0L driver should not rule out the use of the GT3076R if his/her HP target is in the same range. This competition grade turbo is still a big favorite for this HP range because it hits like a hammer while other 500HP turbos are still "spooling up".
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