ZR2/AT4X Spec Active Exhaust Calibration
GM Part #85822149
About this product
Give your vehicle a more aggressive sound with a Chevrolet Performance Active Exhaust Calibration. When in Sport mode, this calibration changes when and how much the active exhaust valves open making for a louder exhaust note at startup, while cruising and under wide-open throttle. Compatible with 2025+ models with a 6.2L V8 engine (also known as L87). Installation by an authorized Chevrolet Dealer is required.
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- Designed specifically for your vehicle to enhance the driving experience
- Activated during Sport mode, allowing a wider range of aggressive exhaust sounds
- At startup and when in Sport Mode, the calibration allows the valve to open up to 35% more for a sporty, more aggressive exhaust note
- While cruising at 1200-1500 rpm, valve opens up to 10% more
- Quicker valve-open response under wide-open throttle
- Compatible with 2025+ models with 6.2L V8 engine
- Installation by an authorized Chevrolet/GMC Dealer is required
Package Specifications
The greater of either the balance of the vehicle's bumper to bumper warranty or 12 months / 12,000 miles
Frequently Asked Questions
No, there is no hardware included for this calibration. The calibration must be performed at an authorized dealer.
This calibration is for 2025+ models with a 6.2L V8 engine.
Installation by an authorized dealer is required.
No, this calibration will not affect the vehicle's emissions.
No. There is no change in HP or torque with this calibration.
Yes, measurements were taken in a chassis dyno and this calibration provides an increase in decibels for the exhaust sound at start up and while cruising.