I'm putting a CC306 in a car with a wet kit (stock heads). I'll be upgrading my fuel pump with the Racetronix kit, but should I get bigger injectors as well? Since it's a wet kit, obviously the larger injectors weren't a necessity for a bolt-on car, so I kept the stockers. What about after the cam goes in? Should I upgrade to 30lb injectors or will the stock ones be fine?

 

I would get the bigger injectors for the cam.

 

Another vote for yes, it wouldn't hurt to upgrade them at this point.

Matt

 

Stock will be fine. You will make 355rwhp at the most with the 306/stock heads and the stock injectors should easily support that kind of power.

 

I agree. Friend on here is running a 306 with ported heads and 200 nx shot and running 10.19 on the stock injectors.

 

Though the stock injectors are supposed to support around 400hp, the duty cycle is completely maxed out at that point. If you do use the stockers and the duty cycle is above 90%, move up to something bigger.

 

Yes check the duty cycle on the injectors.Mileage plays a factor here also. If the injerctors are worn out they will have a high duty cyle also.

The stock injectors should be ok other wise.
Dave