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).
Installation Instructions


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 Overview

What is your shipping cutoff time? 

Cutoff time for in stock items is 2PM CST for items shipping with UPS.  USPS cutoff time is 10AM CST.   If you need a product by a specific date, please call us to find out if its possible to meet your deadline before ordering. Please be aware that there may be discrepancies with shipping calculators or “in stock” status of a product. 

 

Is shipping free? 

Orders over $149 qualify for free shipping within the lower 48 United States. We will select the most economical shipping option for our free shipping option.  If you'd like expedited service, please select that option during checkout.  Unfortunately, shipping to AK/HI or International we cannot offer free shipping, due to the extra costs incurred.  

 

How long will it take to get my stuff? 

Most in stock orders will ship the same day, if ordered before our cutoff times.  Custom items will ship when they are completed, please inquire for timelines on custom items (as this will vary).  We are located centrally in the US (St Louis MO) - so most items arrive within 2-4 days to the lower 48 US.  You will receive a tracking number when your item ships, allowing you to keep track of it at all times.  

 

I am an international customer, are fees / duties included in the shipping costs?

No, these fees will need to be paid by our international customers.  

 

How can I get a quote for shipping?

Please add the item in your cart and proceed through the checkout process. The system will display all the options we offer, along with a price. 

 

Refund / Exchanges

We have a 30-day return policy on non custom items, which means you have 30 days after receiving your item to request a return. 

To be eligible for a return, your item must be in the same condition that you received it, uninstalled and in its original packaging. You’ll also need the receipt or proof of purchase. 

To start a return, you can contact us at sales@retroshop.us. If your return is accepted, we’ll send you instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted. 

You can always contact us for any return question at sales@retroshop.us.

Damages and issues 
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Restocking Fees 
On non customized (returnable items), a restocking fee of 5-15% may be held from your refund.  Some items are special ordered in for customers, and if we have to return them to our suppliers, we may have a restocking fee for doing so.  If there are any questions on the restocking amount, please email us at sales@retroshop.us.

Exceptions / non-returnable items 
Certain types of items cannot be returned, like custom products (such as special orders or personalized items).  Please get in touch if you have questions or concerns about your specific item. 

Unfortunately, we cannot accept returns on sale items or gift cards.

Exchanges 
Please contact us for any exchanges at sales@retroshop.us.

Shipping Charges
Shipping charges are not refunded.  If you selected our free shipping option, the amount we paid to ship the item to you will be deducted from your return.

Refunds 
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.