Turbo-Master Model 40 fits Holset 40 Turbochargers and aftermarket Cummins Turbos with Waste Gate lever pointed down towards exhaust manifold.
Heath's Turbo-Masters are all 100% made in the USA
The Turbo-Master is a fully independent, spring actuated waste gate boost controller. It bypasses the factory compensating canister to provide a much better and controllable boost curve. The factory compensating canister starts to leak boost pressure around 40% of the peak boost pressure to control the boost curve - which hurts performance. The Turbo-Master does not bleed off boost pressure under the set max, which provides a quicker spool time, more turbo efficiency and more boost - which translates to power.
The Turbo-Master is a simple, bolt on upgrade you can install in your driveway in 20-30 minutes.
The Turbo-Master does require a program, as the factory tune will typically throw over-boost codes at a low boost pressure.