an engine with 'fuel injection' [=a system that injects fuel directly into the cylinders of an engine]
The medicine cannot be taken orally; it must be given/administered 'by injection'.
The struggling company needed an 'injection' of cash.
(..) To some people, that's more important. That your car? I see a cool air intake. It's got a NOS fogger system and a T turbo, Dominic. I see an AIC controller. It has direct port nitrous injection. Yeah. And a stand-alone fuel management system. Not a bad way to spend $. You see that shit? (..)2001 The Fast and the Furious
(..) to get the chicken, you say grace. - Dear heavenly.... - Spirit. Spirit. Thank you. Thank you for providing us with a direct port nitrous injection... ...four core intercoolers and ball-bearing turbos... ...and titanium valve springs. - Thank you. - Amen. (..)2001 The Fast and the Furious