GrimmSpeed Stealth Box Intake (15-18 STI)

Design requirements for this intake were simple: The intake must not only be safe for the engine, but perform well both with and without tuning. The intake must be able to be installed quickly, without removal of the bumper. The intake must produce horsepower and torque gains throughout the RPM range, not just on the top end. Justification for the first is obvious, we want you to be able to bolt it on and go, without worrying about your air-fuel ratios and engine safety. Justification for the second came after installing other intakes, only to have our front bumper never fit the same way again. A little research showed that this was a common issue. Yuck.

  • 10whp Gain - Throughout entire rev range, no tuning required
  • Mimics Factory AFR - Safest intake on the market
  • Installed easily without bumper removal - Don't ruin your bumper fitment like other intakes!
  • Made in the USA - Right here in Minnesota, in fact
  • 30min Installation - Extremely simple with our written and video guides
  • Off-the-Shelf Tune Available - Shiv with OpenFlashTablet has developed a map to maximize the potential of the GrimmSpeed intake (an additional ~7whp)

Design requirements for this intake were simple: The intake must not only be safe for the engine, but perform well both with and without tuning. The intake must be able to be installed quickly, without removal of the bumper. The intake must produce horsepower and torque gains throughout the RPM range, not just on the top end. Justification for the first is obvious, we want you to be able to bolt it on and go, without worrying about your air-fuel ratios and engine safety. Justification for the second came after installing other intakes, only to have our front bumper never fit the same way again. A little research showed that this was a common issue. Yuck. * 10whp Gain - Throughout entire rev range, no tuning required * Mimics Factory AFR - Safest intake on the market * Installed easily without bumper removal - Don't ruin your bumper fitment like other intakes! * Made in the USA - Right here in Minnesota, in fact * 30min Installation - Extremely simple with our written and video guides * Off-the-Shelf Tune Available - Shiv with OpenFlashTablet has developed a map to maximize the potential of the GrimmSpeed intake (an additional ~7whp)

Weight
9.00 lbs
SKU
GRM06007
Weight
9.00 lbs
Our Price: $309.00

You've been asking for this bad sally for a while and it's finally here. The intake the for the 15+ STI can be thought of as a hybrid of the tube and filter used in the 08-14 WRX intake and the Stealthbox heat shield used in the 2015+ WRX intake. Small design changes were made, but the overall fit and performance is approximately the same.
Quick Specs

  • Hybrid Cold Air/Short Ram Design - Combining the advantages and eliminating the negatives of both traditional intake designs
  • Air straightener - Dimensionally mimics the factory configuration for accurate MAF sensor readings
  • MAF sensor location - Inside heat shield, isolated from engine bay heat
  • Custom reusable high flow air filter - Integrated velocity stack entrance smooths incoming air
  • StealthBox Heat Shield - Sleek, unique design looks KILLER in your engine bay and keeps the heat of the engine bay from affecting performance
  • Made in the USA - Right here in Minnesota, in fact
  • 30min Installation - Extremely simple with our written and video guides
Why GrimmSpeed?

Sometimes, this explanation is long and technical, especially where performance is concerned. This time, it's simple. The GrimmSpeed engineering and manufacturing teams are known for designing and producing products that use high-quality materials, offer perfect fitment and superior craftsmanship and are durable. These intakes are no different and feature the proven performance of the 08-14 WRX EJ motor intake (third party results coming soon) with a look and feel that set it apart from the competition. With the Stealthbox intake heat shield, you no longer need to look like you've got a shoebox hanging out where your factory airbox used to be.
Of course, like all GrimmSpeed products, we stand behind these kits 100% and our goal is to offer you a customer experience that makes you want to stand behind them as well.
GrimmSpeed Intake Kit Includes:

  • 1x Intake Tube w/ TIG welded MAF flange and Air Straightener
  • 1x High-flow Oiled Filter
  • 1x Hump Hose Connector
  • 1x Stealthbox Heat Shield Assembly
  • 3x Hose Clamps
  • 2x MAF Flange Screws
  • 3x Precut Rubber Sealing Strip
  • 1x MAF Wire Grommet

Options

  • Red Intake Tube
  • Black Intake Tube


warning_symbolWARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to https://www.P65Warnings.ca.gov/passenger-vehicle.

Weight
9.00 lbs
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