whats this relay for?

[mightymanx]

when i picked up my latest 5 i noticed the relay by the ecu was not connected what does it do thanx?

[Alex]

ECU? ;) Sounds like the overboost relay.

[mightymanx]

Lol i no its not really a ecu as i no 5s dont have 1 thats just what i call it ok then whts the realay beside the aei for then thank u

[Alex]

The over boost relay.

[mightymanx]

thanx always wondered what it did