HKS Fuel Upgrade Kit 2004-2021 STI

Here, you are looking at the HKS HKS Fuel Upgrade Kit 2004-2021 STI. 

Details:

• Designed with the latest generation BOSCH top feed fuel type injector. All injectors have been put through spray testing and are picked and packaged into sets of fours by HKS to ensure matching rates and patterns.

• Improved injector performance results in a shorter dead time. (1.35ms => 0.9ms at 14V and 300kPa Fuel Pressure)

• O-rings (2-pieces) and spacer (back-up ring) have been added to the fuel line connector for improved sealing. 

• Adapter harness to OEM plugs included

• High-Flow upgraded fuel pump included