Harman Motive WRX/STi GT-Series Turbokit
[HM-SUB-GT]

Features:

• Made in USA
  
• 100% TIG Welded
  
• 100% Mandrel Bent
  
• 304 Stainless Steel Construction
  
• 3” V-Band Downpipe
  
• Smooth Wastegate Recirculation
  
• Garret GT Ball-Bearing Turbos (400-600hp)
  
• Available with Catalytic converter
  
• Uppipe
• All necessary hardware

Dyno Graph Pictured using 91 Octane Pump Gas, Harman Motive GT3071R, Front Mount Intercooler, & Perrin Header
Benefits:

• Wastegate mounted away from transmission for good clearance and easy installation
• Properly designed large-MAF intake won’t cause idle/dying issues and is easy to tune
  
• Basemaps are available for you and your tuner (tuning is required)
  
• Rerouted wastegate keeps noise down
  
• Works with APS or Perrin FMIC (plus most aftermarket)
  
• Fits with stock or aftermarket headers
  
• V-Band Downpipe connection for easy installation and leak free seal
  
• Turbo support bracket for years of reliable performance
  

Our kit was designed to do everything well so you can enjoy your car in all driving situations. We have designed the uppipe to provide the best balance of spool and top-end power. We have rerouted the wastegate as smoothly as possible for precise boost control without unnecessary noise. We have extensively tested our kit on the track and in competition with rock steady reliability, excellent power output, and repeat victories.

While ready for the race track, the Harman turbo kit makes a great daily driving setup too. We have installed our kit on many stock engined STIs producing 350-400whp daily with great reliability. You'll appreciate the great idle, good off boost power, and instant response of the Garrett family of turbochargers.

Turbo Options
GT3071R - The smallest of the GT series turbos, this turbo is recommended for daily drivers on stock motors. Full boost is achievable at 3800rpm with peak power occurring around 6000rpm. Capable of 400whp at 25psi on the stock block, you can still run down even the fastest cars with this turbo.

GT3076R - The big brother of the GT3071, this turbo has a larger compressor and turbine. While it shifts the powerband north, lag increases by only a few hundred RPM. If you have high quality fuel, this is a great turbo that will pull hard to redline on stock and mild 2.5l motors.

GT3582R - Perhaps the world's most famous turbo. This gem can provide 500+ whp at 25psi on built motors. This is best for top-end on stock motors or all out track dominance on your built engine. Still spools fast enough for daily duty, but you'll have more fun with a faster spoiling GT30R if you're into canyons and HPDE.

a few videos
DMR STi Dyno - YouTube - 455whp gt35r DMR STI
On Track - YouTube - Harman Motive GT3071 at Streets of Willow
2.6 Long Block + Our Kit - YouTube - Harman Motive Time Attack Car - Dyno Tuning
Harman Motive STi- YouTube - JC Meynet Harman Motive STI Dyno

*Kit does not include intake or TMIC adapter

Some parts on this site are sold for Racing or Off-Road use only. Check with your local authorities if in doubt of your local regulations.
Product pricing subject to change.

Product pricing subject to change.

 
Vehicle warranty and legality of use: Installing this performance part(s) on your vehicle may void the vehicles warranty may not meet your states legal requirements for use on public roads (emissions, noise etc – Please check your state law if uncertain). For more information on the sale of performance parts from this site, please read our Terms and Conditions.