Dommination of FI cars.

Evan Smith · 12-17-2007, 07:30 AM

Last time I checked the class is called Stock Eliminator, not Nostaliga Stock. The factories haven't made a car or truck with a carb since the '80s.

This is a stupid debate. Based on the comments made by those who are bitching, it has become clear that they do not understand the basics of internal combuation and/or electronic fuel injection. Furthermore, they are terrified of technology, some of which they probably use every day.

The friggin injectors simply flow fuel and are no different than a jet in a carb. It is but one way the EFI system meters fuel. You can over fuel or under fuel with either EFI or carburetion. An injector is simply a solenoid controlled by the computer, which is tuned by an individual. The idea, just like with a carb, is to find the optimal air/fuel ratio for the engine under WOT. How does one know what the proper a/f ratio is? Easy, you use current technology with an O2 sensor and either track or dyno testing to tune your engine. You can do this with a carbureted setup or with EFI. Once you've achieved max power using this tuning method, there is not much more anyone can do to make more power by simply stroking keys or by other measures. If you do not know how somthing works I recommend you educate yourself before making silly comments in an open forum.

The intake and throttle body is what controls (and limits) airflow, the injectors have nothing to do with airflow. Injectors are flow rated at a given psi and raising or lowering the pressure can increase or decrease fuel flow. One can also alter the "pulse width," which is the amount of time the injector stays open once it is commandeed to do so. In most cases, the TB and intake is sized much smaller than a comparable carb/intake setup for any given displacement engine.

Evan

12-17-2007, 07:30 AM	#11
Evan Smith Member Join Date: Nov 2001 Location: Tampa Posts: 400 Likes: 7 Liked 115 Times in 5 Posts	Re: Dommination of FI cars. Last time I checked the class is called Stock Eliminator, not Nostaliga Stock. The factories haven't made a car or truck with a carb since the '80s. This is a stupid debate. Based on the comments made by those who are bitching, it has become clear that they do not understand the basics of internal combuation and/or electronic fuel injection. Furthermore, they are terrified of technology, some of which they probably use every day. The friggin injectors simply flow fuel and are no different than a jet in a carb. It is but one way the EFI system meters fuel. You can over fuel or under fuel with either EFI or carburetion. An injector is simply a solenoid controlled by the computer, which is tuned by an individual. The idea, just like with a carb, is to find the optimal air/fuel ratio for the engine under WOT. How does one know what the proper a/f ratio is? Easy, you use current technology with an O2 sensor and either track or dyno testing to tune your engine. You can do this with a carbureted setup or with EFI. Once you've achieved max power using this tuning method, there is not much more anyone can do to make more power by simply stroking keys or by other measures. If you do not know how somthing works I recommend you educate yourself before making silly comments in an open forum. The intake and throttle body is what controls (and limits) airflow, the injectors have nothing to do with airflow. Injectors are flow rated at a given psi and raising or lowering the pressure can increase or decrease fuel flow. One can also alter the "pulse width," which is the amount of time the injector stays open once it is commandeed to do so. In most cases, the TB and intake is sized much smaller than a comparable carb/intake setup for any given displacement engine. Evan __________________ Evan Smith 1798 STK Last edited by Evan Smith; 12-17-2007 at 07:35 AM.