Feuling Fuel Injectors for M8Sold as 1 piece Quality OEM replacements and upgrades Made in the USA Injector Size Brief 5. 3 g s Injectors Provides 20% more fuel than the OE injectors and 3. 5% less than the SE 5. 5 G S injectors. These deliver fuel at 5. 3 grams per second through multiple spray holes. Recommended for performance engine combinations making over 90 rear wheel horsepower. 6. 1 g s Injectors Provides 39% more fuel than the OE injectors and 11% more than the SE 5. 5