Grimmspeed Stealthbox Intake | 2015-2020 Subaru WRX (060060)
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2015-2021 Subaru WRX Stealthbox Intake by GrimmSpeed
Inspiration for the StealthBox Intake came from internal discussions about what we wanted from an intake system for the 2015+ WRX. Of course, performance is the highest priority, but at GrimmSpeed so much more than that goes into a product. We wanted an intake that purred quietly under normal driving circumstances but would roar at wide-open throttle. We wanted an intake that looked at home in the well-sported 2015+ WRX engine bay instead of a shoebox stuffed into the fender area.
Features
- Low-profile heat shield protect air filter and MAF sensor
- Utilizes factory scoop for fresh air supply.
- Custom performance air filter with built-in velocity stack.
- High-flow CNC bent and laser-cut aluminum tube.
Benefits
- +32wtq (14.3%) and +21whp (9.6%)
- Designed in CAD - Perfect mating with the factory turbo and ram-air scoop
- Low bend angle aluminum tube - Minimize restriction and maximize performance
- Shielded MAF sensor placement - Protects MAF from heat, which increases the accuracy of readings
- Made in the USA - Manufactured right here in Minnesota
Please Note:
- Take care to install the air filter onto the intake tube properly. Push the filter onto the tube no more than 1" before tightening the clamp. This will ensure that the velocity stack within the filter is allowed to function properly!
Applications
- 2015 - 2021 Subaru WRX
What's in the Box?
- 1x CNC bent intake tube w/ MAF flange
- 1x GrimmSpeed high-flow air filter
- 1x Aluminum heat shield
- 1x 12" MAF harness extension
- 1x Silicon hump coupler
- 3x Stainless steel worm gear clamp
- 3x Rubber gasket material cut-to-length
- 2x MAF sensor machine screws
Warranty
- Grimspeed Limited Warranty
Customer Reviews
This is the peak of WRX intakes, no brand surpasses grimmspeed with quality, performance, and the insanely loud sound. I have a grimmspeed inlet, bpv, + tmic and after putting the intake on the car completely changed. The sound isn’t too noticeable under 10% throttle but once you get on it the sounds are incredible plus the purging from the bpv is just perfection. Plenty of people say cold air intakes aren’t worth it for this platform, I couldn’t disagree more after buying my own the performance gains are noticeable and the sound is just perfection. Only downside is the shipping time, took a little over a month for mine to ship (both the black and red pipe versions will take around that time to ship so pick the one you prefer) takes a while to arrive but once you put it on you won’t regret it. On top of all that install isn’t too hard about 1-3 hours depending on your experience/tools available. As for the tune (yes a tune is required not recommended) a pro tune/etune is your best bet but you can probably run the stage 1+ bigsf tune on the accessport without issue, however if you notice knocking, DAM drop, or unusual AFR values get a proper tune asap.
This intake is one of the best aftermarket options out there, it’s really well made and works perfectly with the original air-duct to ensure it’s getting fresh, cool air from outside the engine bay
I got the grimmspeed stealth box for my 2015 subaru wrx. It sounds great, and the car feels like it runs better with more air. The shipping was excellent and came very fast. I would definitely buy from this company again.
Shipping was fast and item came perfect. The intake is well designed and fits in perfectly. Love the looks and the sound it gave. Definitely a must upgrade.
Shipping was fast product was packaged great!
