Do I need to drill and tap to install a boost gauge on a 2014–2019 Duramax, or are there other options?Updated 4 hours ago

Drilling and tapping the intake manifold is not required, but it is one available method of installing a boost gauge on a 2014–2019 Duramax Silverado/Sierra. If you choose this route, a 1/8-27 NPT drill and tap kit can be used for the installation. Another alternative, non-invasive installation option using our MAP line T-Adapter available depending on your setup. This method allows you to install the boost sensor without modifying the intake manifold, making the process simpler and fully reversible.