I want to get rid of the vacuum controlled wastegate actuator in our 97 Suburban 6.5t. I'm not convinced that a Turbomaster is the way to go. I'd rather fit a pressure controlled wastegate. Before that, I want to study the behavior of the factory setup then tune the modification accordingly. No need for a permanent boost gauge, though.

The option is a boost bolt for a direct gauge but an OBD tool like Scangauge is something I can use for other things as the fleet ages.

Sixto
87 300D