If you’re going to run Flex Fuel it’s recommended to use the E85 Chart.

Base Fuel Pressure

Injector Size For Pump Gas

Bar

PSI

350

375

400

450

480

515

600

640

690

3*

43.5*

1050

1050

1050

1050

1300

1300

1300

1700

1700

3.5

50.8

1050

1050

1050

1050

1050

1300

1300

1300

1700

4

58

1050

1050

1050

1050

1050

1050

1300

1300

1300

Base Fuel Pressure

Injector Size For E85

Bar

PSI

350

375

400

450

480

515

600

640

690

3*

43.5*

1050

1050

1300

1300

1700

1700

1700

2600

2600

3.5

50.8

1050

1050

1050

1300

1300

1700

1700

1700

2600

4

58

1050

1050

1050

1300

1300

1300

1700

1700

1700


*3 Bar/43.5 PSI is stock fuel pressure