Naturally Aspirated to Forced Induction Upgrade - GM Gen 5

If you have already purchased a naturally aspirated calibration from us and you are upgrading to forced induction, this is the upgrade package to do so.

Forced Induction Basic - Includes any boosted combination on a stock fuel system and is limited to a 91/93 calibration.

Forced Induction - Fuel System - Includes any boosted combination with a fuel system upgrade and is eligible for both 91/93 and E85 tunes.