GM E99 ECM Services for ZR1 - Upgrade Only

Tune your 2019 Corvette ZR1. The E99 engine computer on the 6.2L LT5 has to be upgraded before it can be tuned. With this send-in service, HP Tuners upgrades your original ECM so you can calibrate, data log and flash through the OBDII port. There's no trade-in and no new ECM to buy.

This is a send-in service. Your ECM has to come out of the car and ship to HP Tuners, so the car will be down while it's away. Please read this whole page before ordering.

Will it work on my car?

• 2019 Chevrolet Corvette ZR1 6.2L V8 (LT5) with the E99 ECM
• For C8 Corvettes and other Global B cars, see the GM E99 ECM Service (Global B).

What else you'll need (sold separately)

• 8 Universal Credits to license the E99 ECM.
• An HP Tuners MPVI2, MPVI2+, MPVI3 or MPVI4.
• The latest VCM Suite software (free from HP Tuners).
• Optional: the ZR1's other controllers can be licensed too. The transmission (T87A) takes 4 credits, and the chassis and fuel injector control modules take 3 credits each.

How it works

1. Place your order.
2. Our team emails you the order number and the HP Tuners shipping form.
3. Remove the ECM, pack it carefully with the completed form inside, and write the order number on the outside of the box.
4. Ship it to HP Tuners with any carrier. Shipping to HP Tuners is the customer's responsibility; the shipping charged at checkout covers the return trip.
5. HP Tuners upgrades the ECM and ships it back. Allow up to 7 business days once it arrives, plus shipping.
6. Reinstall it, license it with 8 Universal Credits and start tuning.

Ship to:
HP Tuners, LLC
ATT: E99 ECM Service
[Your order number]
711 Dartmouth Lane
Buffalo Grove, IL 60089

Wait for our email before you ship. Please don't send your ECM until you have the order number and shipping form.

Before you ship: important

• No immobilizer relearn, crank relearn or "Replace ECM" procedure is needed as long as the ECM goes back into the same car.
• Once upgraded, no other tuning or calibration tools can be used on the ECM, including dealer reflash tools. Scan tools and dealer diagnostics keep working, and you can return to stock any time with VCM Suite.
• Any other hardware on the same order ships with your ECM. Order it separately if you need it sooner.