Which is faster carb or Fuel injection?

Signman · 08-07-2013, 09:56 AM

Dave, It's great you jumping in here!

Agree the potential is there for EFI to out perform a carb BUT:

When we are talking about Stock we have what we have to work with. Super Stock is a different case with the only limitations nefore the intake port being the throttle body. If the stock throttle body originally rated at 600 CFM may fow up to 750 CFM, a carb originally rated at 750 CFM will outflow the throttle body.

Using sequential fueling and individual cylinder timing potentially can deliver flatter HP and TQ curves along with faster ETs. Reservations are with speed. The volume of commands the ECU must make at high RPMs processor speed along with sensor and injector speed / accuracy are limiting factors. Had a short conversation with a racer working with this and his comment was the injectors go static. Next step would be larger and/or faster injectors with more fuel pressure, probably double what we are using.

08-07-2013, 09:56 AM	#30
Signman Senior Member Join Date: Oct 2003 Location: Lower Slower Delaware Posts: 535 Likes: 22 Liked 269 Times in 99 Posts	Re: Which is faster carb or Fuel injection? Dave, It's great you jumping in here! Agree the potential is there for EFI to out perform a carb BUT: When we are talking about Stock we have what we have to work with. Super Stock is a different case with the only limitations nefore the intake port being the throttle body. If the stock throttle body originally rated at 600 CFM may fow up to 750 CFM, a carb originally rated at 750 CFM will outflow the throttle body. Using sequential fueling and individual cylinder timing potentially can deliver flatter HP and TQ curves along with faster ETs. Reservations are with speed. The volume of commands the ECU must make at high RPMs processor speed along with sensor and injector speed / accuracy are limiting factors. Had a short conversation with a racer working with this and his comment was the injectors go static. Next step would be larger and/or faster injectors with more fuel pressure, probably double what we are using. __________________ Frank Ferrucci I/SA 1271 "Be Thankful for the Gifts You are Given"