Perrin Bracket for Hella Horns WRX / STI (2008-2014) Mazda The NM Power Module is

The NM Power Module is an all new propriatery tune box designed specifically for the N18

full polished piping

The result is smooth

- Improved throttle response and acceleration

Perrin Bracket for Hella Horns WRX / STI (2008-2014) Mazda The NM Power Module isThe PERRIN Brackets for HELLA Horns are designed for a perfect fit on your specific model of WRX and STI. Being tailored for specific models makes for better fitment than competitors' universal brackets. The PERRIN Brackets come with slotted mounting points for horn assemblies. These allow for fine tuning of the position of horns to work with unique setups. By offering multiple mounting points, the connection between the radiator support and bracket