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Description
aFe 08-23 Subaru Outback H4 / H6 Sprint Booster V3 Power ConverterAutomobiles in the 21st century have replaced the more conventional throttle cable technology for an ECM (Electronic Control Module) that translates pedal travel into electronic signals in order to provide power to the wheels. The ETC system (Electronic Throttle Control), also known as drive by wire, has the unfortunate downside of delayed throttle response and subdued acceleration, creating problems in certain circumstances such as up hill starts,
Automobiles in the 21st century have replaced the more conventional throttle cable technology for an ECM (Electronic Control Module) that translates pedal travel into electronic signals in order to provide power to the wheels. The ETC system (Electronic Throttle Control), also known as drive-by-wire, has the unfortunate downside of delayed throttle response and subdued acceleration, creating problems in certain circumstances such as up-hill starts, quick gear changes, overtaking, etc. The Sprint Booster aims to overcome this throttle response delay for ETC-equipped vehicles, providing crisp on-tap acceleration at the driver's disposal. For vehicles with electronic control (ETC) systems, or drive by wire, this device plugs into the OE connector located behind the accelerator pedal. It's a simple installation, requiring no cutting of any wires or interference of the automobile's electronics. It does not affect other systems such as electronic injection, ABS, etc. The three main acceleration modes can be switched by pressing the main button. When the LED is off, the Sprint Booster is deactivated, and the car has factory settings. In Sport Mode, the LED is green, and throttle response is improved by up to 30%. With the red colored LED, the Sprint Booster is in Race Mode, and it improves response by up to 60%. Each acceleration mode comes with nine programs. Select 1-9 in SPORT mode and 1-9 in RACE mode, with '1' being the least aggressive program and '9' the most aggressive. The acceleration programs can be changed using the two arrow buttons on the top of the device. By selecting the desired acceleration program in each mode, the driver can fine-tune each mode per their driving style (e.g. select SPORT 9 & RACE 5).This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2019-2024 | Subaru | Ascent | Base |
| 2025 | Subaru | Ascent | Bronze Edition |
| 2019-2025 | Subaru | Ascent | Limited |
| 2022-2025 | Subaru | Ascent | Onyx Edition |
| 2023-2024 | Subaru | Ascent | Onyx Edition Limited |
| 2025 | Subaru | Ascent | Onyx Edition Touring |
| 2019-2025 | Subaru | Ascent | Premium |
| 2019-2025 | Subaru | Ascent | Touring |
| 2016-2023 | Subaru | Crosstrek | Base |
| 2016-2023 | Subaru | Crosstrek | Limited |
| 2016-2023 | Subaru | Crosstrek | Premium |
| 2021-2023 | Subaru | Crosstrek | Sport |
| 2010-2012 | Subaru | Legacy | 2.5GT |
| 2008-2019 | Subaru | Legacy | 2.5i |
| 2008-2019 | Subaru | Legacy | 2.5i Limited |
| 2010-2019 | Subaru | Legacy | 2.5i Premium |
| 2008-2009 | Subaru | Legacy | 2.5i Special Edition |
| 2014,2017-2019 | Subaru | Legacy | 2.5i Sport |
| 2009 | Subaru | Legacy | 3.0 R |
| 2008-2009 | Subaru | Legacy | 3.0 R Limited |
| 2010-2013 | Subaru | Legacy | 3.6R |
| 2010-2019 | Subaru | Legacy | 3.6R Limited |
| 2010-2012 | Subaru | Legacy | 3.6R Premium |
| 2020-2025 | Subaru | Legacy | Base |
| 2008-2009 | Subaru | Legacy | GT Limited |
| 2008-2009 | Subaru | Legacy | GT spec.B |
| 2020-2025 | Subaru | Legacy | Limited |
| 2020-2022 | Subaru | Legacy | Limited XT |
| 2020-2025 | Subaru | Legacy | Premium |
| 2020-2025 | Subaru | Legacy | Sport |
| 2020-2025 | Subaru | Legacy | Touring XT |
| 2008-2019 | Subaru | Outback | 2.5i |
| 2008 | Subaru | Outback | 2.5i L.L. Bean Edition |
| 2008-2019 | Subaru | Outback | 2.5i Limited |
| 2008 | Subaru | Outback | 2.5i Limited L.L. Bean Edition |
| 2010-2019 | Subaru | Outback | 2.5i Premium |
| 2009 | Subaru | Outback | 2.5i Special Edition |
| 2017-2019 | Subaru | Outback | 2.5i Touring |
| 2009 | Subaru | Outback | 3.0 R Limited |
| 2010-2013 | Subaru | Outback | 3.6R |
| 2010-2019 | Subaru | Outback | 3.6R Limited |
| 2010-2012 | Subaru | Outback | 3.6R Premium |
| 2017-2019 | Subaru | Outback | 3.6R Touring |
| 2008,2020-2025 | Subaru | Outback | Base |
| 2020-2025 | Subaru | Outback | Limited |
| 2020-2025 | Subaru | Outback | Limited XT |
| 2023-2025 | Subaru | Outback | Onyx Edition |
| 2020-2025 | Subaru | Outback | Onyx Edition XT |
| 2020-2025 | Subaru | Outback | Premium |
| 2008 | Subaru | Outback | R L.L. Bean Edition |
| 2020-2025 | Subaru | Outback | Touring |
| 2020-2025 | Subaru | Outback | Touring XT |
| 2022-2025 | Subaru | Outback | Wilderness |
| 2008-2009 | Subaru | Outback | XT Limited |
| 2015 | Subaru | XV Crosstrek | Base |
| 2013-2015 | Subaru | XV Crosstrek | Limited |
| 2013-2015 | Subaru | XV Crosstrek | Premium |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.9 ★★★★★
Based on 1877 reviews
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Product Reviews
★★★★★ 5
Perfect Balance of Comfort, Support, and Style!
Size: 934-Z, Color: Black, Size: 934-Z, Color: Black
I’ve been using this chair for a few weeks now, and I’m genuinely impressed with how much of a difference it’s made in my workspace. The mesh back is one of my favorite features—it offers excellent breathability and prevents that sticky, overheated feeling you sometimes get with solid-back chairs, even after sitting for hours. The seat cushion is firm enough to give proper support but still has enough give to keep me comfortable through long workdays. It feels like the perfect middle ground between soft and supportive.
The adjustable foot ring has been a complete game changer for me. I use a taller desk setup, and having somewhere to rest my feet makes a huge difference in posture and overall comfort. Whether I’m sitting upright for focused work or leaning back to read, it’s always at the right height.
The flip-up armrests are another smart design choice. When I’m typing, I like to have them down for support, but when I’m done, I can flip them up and push the chair neatly under my desk—saving space and keeping things tidy. The casters roll smoothly on both hardwood and rugs, so I can move around easily without scraping the floor or getting stuck. The overall build quality feels solid and sturdy, with no wobbles or creaks.
Assembly was surprisingly quick—everything was clearly labeled, the parts felt durable, and it only took me about 20 minutes from opening the box to sitting in the chair. The sleek, modern look is another big plus—it blends in perfectly with my home office décor without feeling bulky or taking up too much visual space.
If you’re looking for a chair that combines comfort, ergonomic support, durability, and style, I can’t recommend this one enough. It’s equally great for work, studying, or just relaxing at your desk, and it’s definitely been worth every penny.
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Reviewed in the United States on August 12, 2025
★★★★★ 3
OK for the price, but overall comfort is avergae
Size: 934-Z, Color: Mustard
Easy to put together, color (mustard) accurate to images, and while I understand this is not a high-end chair, I feel like it still needs to be rated for its quality.
Pros: the seat cushions are fairly comfortable and it rolls well. Adjustable footrest is easy enough and mostly sturdy.
Cons: For a tall office chair, it doesn't go up high enough. I actually had to lower my standing desk to sit at it, which then isn't where I want it when I'm standing now. It's also a bit wobbly. The seat area's attachment to the post isn't as solid as it should be for a tall chair, so while sitting, it does tend to lean/slope forward and wobble side to side. The lumbar support is not adjustable, so I'm not even really sure what it does. And the armrests are not very comfortable to use. Since they are hard plastic, they are just a bit too rigid to rely on for any comfort. They are basically there to hold on to when you're getting out of the chair.
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Reviewed in the United States on May 29, 2026
★★★★★ 4
Good Value for a Tall Chair
Size: 934W-Z, Color: White
I have received this chair just today and would like to give my first impressions of it.
Height is super adjustable as well as the foot rest. My desk is very tall (~34 inches vs standard ~29 inches) and does not suit a standard height chair. This chair's height is enough to sit comfortably at mybut also still having adjustment to be even higher.
Lumbar support is a manual adjustment that can be adjusted by sliding the lumbar piece up or down and it seems it can be tiled as well.
No reclining feature or slight backrest tilt adjustment. I'm used to my chairs reclining so it feels a little awkward siting in a flat base and straight backrest. I feel like I'm sitting too forward or leaning forward slightly but is probably something I can get use to.
Easy to put together and feels very sturdy. Plastic parts of chair are made from a really sturdy plastic, like playhouse plastic materials. Wheels roll around carpet easily. Mesh seems to be a strong material, though the mesh feels kind itchy on bare skin.
Overall, I think this is a good chair to get if you're needing a tall chair for a good value and can sacrifice no backrest tilt.
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Reviewed in the United States on December 3, 2025
★★★★★ 5
Excellent value for money!
Size: 934W-Z, Color: Black, Size: 934W-Z, Color: Black
I absolutely love this office chair! I needed a chair that could support my standing desk without sacrificing comfort, and this one completely exceeded my expectations. It's incredibly sturdy and durable, well-made, and the height adjustment is super convenient, making it easy to find the perfect fit. Even during long hours of work, the seat is comfortable, and the ergonomic design effectively reduces pressure on my back and legs. I love its clean, modern look—it fits my home office perfectly. Assembly was quick and easy, and for this price, the quality is absolutely fantastic!
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Perfect chair!
Size: 934-Z, Color: Blue, Size: 934-Z, Color: Blue
I have an adjustable-height desk (also purchased from Amazon) and needed a drafting chair for those times when my body gets tired of standing. This chair fits the bill and then some! I put it together myself; it took me about an hour, but would take me about half that next time, since now I know what to do (and what NOT to do!). All the parts were there; there are even spare parts (see photo). All the holes were drilled in exactly the right places, too, which isn't always the case when I buy things from Amazon (my standing desk is a great example). The chair fits me; I'm short (5'3.5"), and often the seats of furniture are too deep for me to rest my feet flat on the floor. The depth of the seat on this chair is just a little over 18 inches, and with the adjustable footrest ring, it's perfect. I don't think a tall or heavy person would fit in it, to be honest. But it's perfect for those of us who are vertically challenged. I love that it glides easily on my hardwood floors and that it turns 360 degrees. The chair comes in numerous luscious colors, so take your pick! It is very sturdy, has good lumbar support, and the seat and seat back are very comfortable. And the arms flip up, which was an absolute must when I was shopping for this chair. I got it on sale, too -- $109.00 -- and I'm delighted with this purchase.
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Reviewed in the United States on April 23, 2026
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