GM Tune Update

Boschma's Speed Shop is an authorized Shoemaker Performance dealer. This is a custom e-tune from Shoemaker Performance, delivered electronically with no shipping charge. After you order, we'll get you set up with Shoemaker to build and deliver your tune. Questions about your setup? Call us at 608-481-2789 or email bandbracing@sbcglobal.net.

Modifications never stop, and neither should your calibration.

If your GM vehicle is already tuned by Shoemaker Performance and you've recently added new parts or changed your combination, this calibration update is designed to keep your tune aligned with your current setup.

Whether you've upgraded fueling, added airflow modifications, changed pulleys, installed a camshaft, or made other performance-related changes, our team will review your updated combination and revise your calibration accordingly.

This update purchase includes calibration support for the modifications submitted at the time of purchase and remains active for up to six months from the date of purchase.

Please Note:

• Valid only for vehicles previously tuned by Shoemaker Performance
• Covers only the modifications disclosed when the update is purchased
• Calibration support remains active for six months from the purchase date
• Additional modifications made after purchase may require a new tune update at our discretion
• Not valid for transferring a tune to a different vehicle or owner

Every modification changes the equation. This service ensures your calibration evolves with your build, delivering the performance, drivability, and reliability you expect from a custom tune.

Submit your updated modification list and we'll take it from there.