Hoarse power

n.

Heard in Tipperary

Used to describe a car made to sound louder and more aggresive than it actually is. Typically done by Boy racers by fitting an aftermarket exhaust system.

In use

The complete state of that car. She's definitely runnin on Hoarse power

Posh English

The wretched state of that motor car. It is undoubtedly operating on mere acoustic bravado.