I am thinking about buying 444cc injectors for my 240sx with a ka24e engine the person who is selling them says they would be good if I was turbo charging my engine but I was wondering if i wasent planning on turbocharging it if it would still be a good idea to use 444cc injectors and what the difference between something like 220cc injectors and 444cc injectors?

Thanks

 

How much boost?
What else in the fuel system and ECU do you intend to upgrade?

 

well as the numbers tell you 440cc will flow a lot more than 220cc, i think it's common sense. Although if you don't modify your ecu, you wont really see any difference as the ecu will still have the fuel maps of the old injectors.
If you upgrade the injectors, then try to look at some newer fuel mapping.. ecu chipping and whatnot.

I think one of the best technical sheet I found was from the RC Engineering website. http://www.rceng.com/technical.htm also their faq is pretty good. Hope that helps.

 

they are both correct.

Without anything else upgraded, there won't be a need to pump in more fuel, you'd need to upgrade your fuel pump. You won't need this if you just plan on doing bolt on's.

Dr.