this is the advertisement on the site:
STOP PLAYING WITH YOUR KNOBS !!
you don't have to PUT UP WITH UNREGULATED BOOST OVER SHOOT any more !! Hybrid FULL electronic boost controller is the best value for money! This product is the result of constant refinement on the street and track. Hybrid full electronic boost controller not only spools up the turbo quicker but also regulates the boost. Features: *Microprocessor controlled *Closed/open loop design *Accurate boost regulation *Fast boost attenuation *Two boost settings *Compact design *Fully in cabin adjustment *Competitive price *9bar /130psi solenoid *Easy installation Built in 2 preset boost adjustment that allows u to change or switch your boost setting instantly in your cabin. This unique full electronic design is ideal for launch control (e.g. low boost to launch then high boost for acceleration ) not only adjust the boost but also regulates it for your safety.
DISCLAIMER - THE BUYER IS RESPONSIBLE FOR PROPER INSTALLATION AND ADJUSTMENT OF THE BOOST CONTROLLER . ALTERING ANY VEHICLE FROM Its STOCK CONFIGURATION CAN BE DANGEROUS AND/OR CAUSE FAILURE. IF YOU FEEL YOU ARE UNABLE TO SAFELY COMPLETE THIS INSTALLATION, YOU MAY WANT TO CONSIDER BRINGING THE VEHICLE TO A PROFESSIONAL OR CONTACT powerdigger.com FOR FURTHER ASSISTANCE. powerdigger.com IS NOT LIABLE FOR ANY DAMAGES OR INJURY DUE TO USING THIS BOOST CONTROLLER.
i have a question:
how can it be both closed and open loop design, isn't it one or the other unless there is a switch somewhere?