drag

[koihoshi]

Well, technically speaking, since a carburetor setup is manipulated through a system of jets, vacuum, and manual tuning, it's far more primitive. Fuel injection systems nowadays can be more efficient because the actual amount of fuel can be changed at intervals, rpms, speed, and tons of other variables depending on the ECU. not to mention lots of different injectors can even change the pulses of opening/constant/not constant. So fuel injection is a FAR more efficient system when it comes to making power AND burning fuel. This isn't counting the other variables that go in, such as air flow measurement, air to fuel mixture it can calculate.... all of which carburetor setups are unable to do since the only variables there are jetting, air/fuel mixture, vacuum, and balancing the carbs, which is a static variable except for wear and tear and re-tuning later most the time.

You can spend tons of money on performance carbs though. But stock for stock, fuel injection for the win. This is why a lot of people move over to aftermarket fuel injection systems on some performance vehicles. One such example is old european cars with "CIS" which is a BOSCH Design where it was mechanical fuel injection, and ran off of vacuum and really primitive sensors and vacuum measurement. A lot of people junk that setup and move over to a system called "MEGASQUIRT" which is a Do it Yourself type project where you essentially BUILD a fuel injection system based off of EFI which makes more power, easier to tune, more efficient, better mileage, less weight, yadda yadda....

There's also other variables on HOW it injects it. Since carb mixes everything before it hits the combustion chamber.... fuel injection can also do things such as injecting it before the valves, some injection setups are a direct injection into the combustion chamber itself (VERY efficient, but not seen on many setups). So pick your variables, your budget....

A megasquirt system can be had for about $500 if you're willing to weld, do the legwork, have a laptop, and love tinkering....

[aerohead]

Originally Posted by 69chevelle

Which is better fuel injection vs Carburetor for drag racing I guess from a eco perspective?

Are you doing a launch at redline,and then letting the clutch progressively lock up over the 1/8-or 1/4 mile? If so,then would it make a difference?
If the engine is throttling down the course,the "efficiency" of a duel-feed 4-barrel Holley/Edelbrock/Carter carb. might be approached with a multi-throttle-body EFI system,allowing,out-of-the-hole low end response and top end power.
Is that kinda what you're asking?
There are so many applications and possibilities it would be difficult,if not improper to make any general blanket statements.

[The Atomic Ass]

Originally Posted by MadisonMPG

I accidentally a whole coke bottle. Should I a doctor? y/n

How did you accidentally the whole thing? That thing gets WIDE past the neck...

[Frank Lee]

I've heard of accidently light bulbs and flashlights but not coke bottles...

[Christ]

Direct Injection is better on all accounts. There. I fixed it.
Really? A whole coke bottle?

[some_other_dave]

From an eco perspective, not drag racing is better...

-soD

[MadisonMPG]

Originally Posted by Christ

Really? A whole coke bottle?

I am 12 and what is this?

[Cd]

If you want to drag race, yet do it in an environmentally friendly way, look at what this guy is doing :

Welcome to Plasma Boy Racing, home of White Zombie, the world's quickest street legal electric door slammer in the 1/4 mile drag.


Low 11s and has the potential to be zero emissions if recharged using wind / solar power.

I love '69 Chevelles BTW ( minus their pollution )

[Christ]

Originally Posted by MadisonMPG

I am 12 and what is this?

It's a fish.