I want to get the purren fuel rail and bigger injectors what ones should I use

 

RC injectors are good

 

what size shold i use

 

If you don't have a turbo or supercharger, don't.

 

y not

 

Because as I understand it, unless you are adding more air along with the fuel, you won't see any gain. You have to match the additional fuel with air. If you don't you will be running rich, and the sensors will pick that up. The sensors will tell your ECU, which will in turn attempt to lean up the fuel being squeezed out of those bigger injectors.

End result? Several hundred dollars down the drain with nothing to show for it power wise.

 

Well said Dustin, as always. ^^^^^^^^ +1