your opinion on my injector size 550cc 650cc 740cc??

[statickx991]

ok i have a s14 blacktop with the following mods done to the motor.cp 9-1 compression pistonsbc 272 camsbc valve springs and retaintersgt3071r turboeagle rodsarp head studsgreddy intake manifoldfull exhaustaem fprapexi power fc d-jetrogreddy rocker arm stoppersgreddy type s bovfmiccometic head gaskettreadstone cast top mount manifoldmethanol injection (custom built by me)

ok now lets get to the point, that was the basic done to my motor. i built it for daily driveing. i was gunna get 650cc injectors because i dont want terrible gas mileage form the 740cc injectors. if anyone has 740cc how is the gas mileage with them compared to 550-650cc injectors. im not going for the most power i can get, thats y i was thinking bout the 650cc.

[the converted]

With all of that (especially methanol) your probably going to want the 740's. You'll probably end up running the 650's past their duty cycle. You shouldn't get bad mileage with any particular Injector over the other so long as your properly tuning your engine, that does not mean a chip and an safc but more likely a calumsult or if your ballin AEM or Power FC.

[statickx991]

yea i got the power fc djetro so i dont have a maf i have map now, and with the methenol how i hook it up is basically like a nos kit with huge nozzels, im gunna have it start spraying around 4 grand or 4 psi, which ever it hits first it will start injectring through huge nos nozzels so that will allow me to run about 5 more psi ontop of my pump gas plus engine will run cooler and it will act like i have bigger injectors.

[redtop91]

740's for sure. Bigger injectors don't make your gas mileage go down because they only dump fuel when your ECU tells them to. Duty cycle tailors to keep your AFR optimal, IE to match more air in the motor as caused by higher boost levels.