Injectorzz
 

at what HP point should u UPGRADE to bigger injectors?

when yours are maxxed out lol, j/k.

Your stock injectors will be fine even with all the bolt on's and cams so dont worry about them unless you go with a blower or turbo or dry nitrous system.
Stock injectors at 45psi are good for right around 310hp rwhp if i got the math right.

you have pink tops I'm assuming? Those would be 21/22 pound/hr and those are fine until you see a blower. Even moderate shots dry nitrous systems aren't an issue with those.

Spike nailed the math of it... I usually stretch that out to 325 for pink tops and drop to 300 for yellow tops but same basic idea.

my injectorz have like a light orange top. I believe they are 19 pounders.

orange=19
pink=21