http://www.kermatdi.com/servlet/-strse-176/Dawes-Device--dsh-The-Basic/Detail
Dawes Device -The Basic Boost Controller
SKU: Dawes BBC
Advantages:
1) Classic Design: at an Affordable Price!
2) Customer Satisfaction: Rating of over 99%
2)100% Quality Inspection: Assures Fully Functional Controllers Everytime!
Applications: All wastegated turbocharged engines (not for VW TDI '04+), including OBDII equipped applications
Price: $35 (includes 7 page online manual)
Purpose: To provide an inexpensive way to allow more boost by eliminating computer control of the wastegate, and to save you $300, when compared to an electronic controller.
How it works: Our boost controller mounts in-line between the intake manifold (or turbo nipple) and the wastegate. The controller holds the signal from the wastegate until the desired boost level is reached. By conditioning the boost signal this way, the following results occur:
a) Time to Peak Boost is dramatically improved
b) More boost "area under the curve" for increased mid-range torque!
c) Boost limit is raised to the point that you, not the ECU, desire!