Programmable 1 or 3 minute idle after the ignition key has been removed.
In turbocharged vehicles this prevents hot oil in the engine from coking up in the lines. Hard driving can raise engine oil temperatures to dangerously high levels. Proper cool down is essential for a healthy turbo and engine.
I've been buying from sonic electronix for about 3 years. They have top of the line equipment and there prices are cheaper then most other sites if not sonic will beat there price. There service is great I received all my stuff on time. thanks for being the best around and giving 110% to customers