Store wide fall 🍁 savings!

  • Expert Support 7 Days a Week

  • Unmatched Quality & Experience

🔥 Fall Sale — deals across diesel, truck, UTV and audio

SKU: 143-109

Straightline Performance Stage 1 ECU Tune for Polaris Boost

Regular price $899.95
Shipping calculated at checkout.


Confirm vehicle fitment

Confirm fitment before ordering. Match the year, make, model, trim, engine, drivetrain and selected options shown on this page. If any detail is unclear, search your exact vehicle or contact us before checkout.

Shipping expectations

Availability and processing time can vary by manufacturer. Available shipping choices and charges appear at checkout. Tracking is emailed after shipment. Oversized, special-order and supplier-shipped items can require additional processing time.

Returns and cancellations

Please review eligibility before purchase. Installed, used, electronic, custom, special-order and clearance items may have return restrictions. Contact us promptly if you need to change or cancel an order.

What’s included

The product description and selected variant determine what is included. Items shown in lifestyle or installation photos are not included unless they are specifically listed in the description.

Before you add to cart ✓ Confirm year, make, model, trim and engine ✓ Check the selected variant and what’s included ✓ Review availability, shipping and return eligibility

Buy with confidence

Verify fitment, selected options, availability and included components before checkout. Secure payment options and order confirmation are provided at checkout.

Description

Transform your snowmobile into an absolute powerhouse with a simple plug-and-play upgrade designed to deliver serious thrills. This flash tool gives you instant access to three switchable tunes right from your factory 7S display, unlocking up to 40 additional horsepower for blistering acceleration and razor-sharp throttle response across trail and mountain terrain.

Built-in diagnostic monitoring and data logging allow you to check engine health and tweak performance without needing a laptop or extra hardware. Engineered for dependable pump gas operation, it delivers massive power upgrades while keeping your daily rides smooth, safe, and exhilarating.

Brand Straightline Performance
Product Type ECU Tune & Flash Tool
MPN 143-109
Compatibility Polaris 850 Boost Models
Stage Stage 1
Power Gain Up to +40 HP (+20 / +30 / +40 HP)
Fuel Requirements 91 Octane (20/30 HP), 100 Octane (40 HP)
Display Compatibility Polaris 7S Display
Recommended Add-Ons Clutch Kit
Weight 1 lb
Dimensions 4 × 4 × 4 in

Payment & Security

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Product features

Use this section to highlight specific product features to your customers.

Product comparison grid

Add content here to explain a bit about the range of products on offer and which ones may be most suitable for your customers.

A table comparing the facets of 4 products
Facet
Product title
View details
Product title
View details
Product title
View details
Product title
View details
By
ByProduct vendorProduct vendorProduct vendorProduct vendor
Price
Price
$99.99
$99.99
$99.99
$99.99
Description
DescriptionA description of the product, including details such as build quality, materials used and reasons to purchase.A description of the product, including details such as build quality, materials used and reasons to purchase.A description of the product, including details such as build quality, materials used and reasons to purchase.A description of the product, including details such as build quality, materials used and reasons to purchase.

Our Collections

Image banner

Share information about your brand with your customers. Describe a product, make announcements, or welcome customers to your store.