wastegate 
noun
A device in a turbocharger which regulates the pressure at which exhaust gases pass to the turbine by opening or closing a vent to the exterior.Gases passed through the supercharger and out the wastegate, after driving the turbine bucket wheel....
- Its turbocharged, 698 cc, three-cylinder engine makes a fluttering sound every time you back off the throttle, caused by the turbo's wastegate releasing pressurised exhaust gases.
- Plus you can use the electric motor to eliminate the need for a separate wastegate, eliminate throttle lag, and take advantage of an air bearing's lower friction by using a smaller motor/generator unit.
- have someone's number on it
- have someone/thing by the balls
- have someone/thing in mind
- have someone up
- have-something
- have something against someone
- have something at one's feet
- have something coming out of one's ears
- have something in common
- have something off (or down) pat
- have something on good authority
- have something on one's side (or something is on one's side)
- have something (or nothing) to show for
- have something out
- have something to burn
- have something to offer
- have something to one's credit
- have something to say for oneself
- have stars in one's eyes
- have steam coming out of one's ears
- have swallowed a dictionary
- have the advantage of
- have the better of
- have the courage of one's convictions
- have the drop on