Based on what is regarded as the the best boost controller available the AMS-1000, the neww AMS-500 is the baby brother for those who do not need all the extra features the 1000 has. Do not under estimate its performace or potential however it is a full function 2 stage controller, the first sage can be set for staging using a transbrake or switch and the second for launching with a ramp function to keep the car hooked up of the line you can control the rate that the boost comes on. The 500 uses the proven software and waste gate control system of the 1000 so you know it performance will be spot on.