19lb Or 24lb For My Setup?

I think threads like these begin under false a false assumption sometimes. The assumption is that larger fuel injectors are going to some way improve the performance of some engine combination.

Unless your current fuel system is not able to support your engine combo then there's no benefit to larger injectors.

If you're planning larger injectors in anticipation of an engine up-grade then you need to try and determine the (as accurately as possible) what the real world power output range will be so that you can MATCH injectors to that fuel requirement.


So naturally, my first question is usually something like, "What are you doing that makes it necessary to install larger injectors"? Particularly since your 19s are capable of supporting your present combo. Are you running lean? If so, how did you confirm this condition?

If there's no pinging or popping, then you're probably right in the crease.