i have 440cc injectors used for about 5,000kms. i upgraded to 660cc because i started running more power and im building the engine soon. the 440cc injectors are good for supercharged cars because most kits dont come with injector upgraded and it is necessary for you not to lean out and blow ur engine. obvioestly works with turbo as well! bigger injectors are a must wen you go forced induction and 440cc are not bad on fuel compared to other size injectors.

400$