Two boost level settings and scramble boost setting. Programmable center LED is 87% larger than original AEM gauges. Slim 0.825" overall gauge depth and 0.200" cup depth - mount them virtually anywhere!
I hooked this up and the gauge itself is really nice but the solenoid lasted 10 minutes before it failed completely, had to order a mac valve and will see how that works out, so I like it but disappointed.