Looking to piece together my body build. I've been told it's bad to get too big of fuel pump and too big of injectors. I don't want to have to replace the fuel pump more than once if I don't have to. I'm looking at 340 and 400 I want to go with the 400 so I can turn up body layer if needed. Will this be too big? I'm only going to be starting with a 300hp goal. As for injectors I fsameigured I would go with 750s but I have seen some 1000s for about same price. Would it be bad to go with the 1000s be bad to use or would I be ok? Let's say brands are the same for this situation. I hope I make sense with my question. Thank you for any answers.

 

With good engine management, you can run any of the parts that you have mentioned above. If you are going to run a conventional fuel, I would use the 340 lph pump and the 1000cc injectors. If you plan on using E85 for fuel, go with the 400 lph pump and the 1000cc fuel injectors.

 

I plan on running an s300.... so as long as management is good anything will work out week just detune as needed. I don't think I'm going to run e85.... would like to stay on 91 pump... I want sure if these items needed to be ran at a certain percentage to run correctly... like if I get too big of max flow but only run them at let's say 20% as opposed to a lower flow running at 60%. If that makes sense...

 

The S300 will work just fine. There is a science with respect to fuel injector duty cycle, but the effect on performance is almost negligible. When duty cycles are kept artificially low at maximum engine RPM, there is a slight increase in the delay in which the fuel enters the cylinder, and thus, some fuel puddling on the back of the valve occurs. The only negative effect from this is slightly reduced fuel economy...

 

ok thank you for the info