WHY?
Are you annoyed with that 2800 rpm stumble you get while driving your 2008+ Subaru STI? Wish you could easily fix it? COBB has the answer; the COBB Subaru 08+ STI Fuel Pressure Regulator Kit. A plug-and-play solution that is simple and easy to install. It requires no cutting of factory hoses and is multi-fuel compatible. Compatible with COBB Stage 3 OTS Maps, custom tuning will be required for other setups.
