ATP Turbo GTX3076R Turbo - Subaru Models (inc. 2002-2007 WRX / 2004+ STI)
Manufacturer Part # ATP-SUB-021
Bundle Savings:MSRP: $2,195.00
As low as $7,923.11
Each GTX 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 GTX turbo to the EJ engine so that the fit is as OE as possible.
Just bolt the turbo on, add fueling and a good tune and prepare for a blast of acceleration. Garrett GTX turbos offer more than just "peak HP" numbers. These GTX turbos off more torque area under the curve and more "accessible" power than any other turbos series out there.
We do recommend that you compliment your GTX bolt-on turbo with a nice high flowing bellmouth downpipe and a high flowing inlet pipe to effortless 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, as a rule of thumb, turbos, especially higher flowing units love as much inlet flow as possible. This promotes both quicker spoolup and better ultimate 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, has 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 uncontrollable rise in boost.
The GTX3076R is a great match for the 2.5L that still has great spoolup, especially if you're looking for boost threshold that is just a little later than stock but still want enough airflow for 500+HP. The GTX3076R makes boost about 300 to 400 rpms later than the GTX3071R but keeps pumping where the GTX3071R starts to run out after 450HP. A lot of the boost is available even at part to medium throttle. Dual ball bearings means boost recovery between gearshifts is awesome with full boost ready even before upshift is complete as the STI lurches forward with shear enthusiasm at the onset of each gear. The 2.0L driver should not rule out the use of the GTX3076R if his HP target is in the same range. This competition grade turbo is still a big favorite for the HP range because it hits like a hammer while other 500HP turbos are still "spooling up".
What sets the GTX apart from the GT series turbo is the new high flowing 11 blade next generation compressor wheel.
2 uppipe gaskets will be needed if using the included spacer.
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jeff-subaruseuth 5 years ago
It starts to spool at 3500 and hits my target boost of 22psi at about 4500rpm. Peak hp it put down was 403 at the wheels with 391 ft lbs tq. Ej257 motor all supporting mods. With e85,external wg setup, and a higher boost target of 25psi. I can see this turbo easily put down 500 at the wheels. My car was dyno'd on a mustang dyno too. From what i read the mustang dynos read lower than other dynos.
Great track turbo
g0al3d52806 5 years ago
First of all understand that without a built block you probably will not be able to tap into the full potential of this turbo. that being said even without a built block this thing with supporting mods (injectors, fuel pump, intercooler) is putting down 364 to the wheels. I don't reach usable boost till 4k rpms but then it pulls like a beast. Obviously shift points will change and take some getting used to. Getting a turbo blanket on the internal wastegate version is difficult, i ended up having to go with a PTP t3/4 blanket and my installer had to do some cutting and fabbing to get it to work (in retrospect I kinda wish I did the externally gated version). I would probably shy away from this turbo for a purely street driven car and even on the track I'm gonna look to build the motor port and polish and do some cams to try to get the spool about 500rpms earlier (this I think will be absolutely perfect) but as a daily driver/weekend track warrior this is a great setup for a stock location turbo.
QUESTIONS & ANSWERS
Q: Injectors Hasan7 8 months agoAnswer
If using id 1050x injectors, will the turbo give its full potential?
A: Most likely not. You will probably need 1300 but I would consult your tuner to be sure.
Tyler A. 8 months ago
Q: Spool time Ray 10 months agoAnswer
I have an 07 sti ej257 with fully built block, bc camshafts 280, bc cam pulleys, bc springs & retainer kit, bc intake and exhaust valves +1mm, act prolite flywheel with act xtreme 6 puck clutch, 1000cc dw injectors+ fuel rails, aem fuel regulator etc..... what spool time should I expect and what rpm would hit full boost on this turbo and the gtx3071r dual ball bearing gen 2?
A: We don't have precise access as to when you will hit full boost as their are too many variables with elevation, tune, fuel, etc. Typically you can expect a slower spool time because this is larger, however, it won't be too much longer to hit full boost then what you are at. At most another 1000 RPM's.
Tyler A. 10 months ago
Q: Gtx3076 on JDM ej207 Grangepark 2 years agoAnswer
Anyone know if it'll work for a JDM 2.0L Ver 9? If yes.. Expected spool rpm?
A: We do not have a confirmed fitment for JDM models.
Nick S. 2 years ago
Q: Comparison with Blouch Dom 1.5 Bencwj 3 years agoAnswer
How is the spool rate as compared to blouch dom1.5? Am I able to use stock block with just supporting mods?
A: The Dominator 1.5XT-R turbo with the 8cm exhaust housing will spool faster than this turbo by a few hundred RPMs, and the 10cm housing should spool close to the same as this. You can use this turbo on a stock engine, but you likely won't be able to get the full potential from the turbo with stock pistons and retain reliability.
Zach G. 3 years ago