the 5 minute tour on how EFI works

[grumpyvette]

I get lots of questions on if MPFI (MULTI PORT FUEL INJECTION) or CARBS or TB (THROTTLE BODY) injection is better,SO I figure ID post a very brief explanation and info links,on how each system basically functions ,most fuel current injection systems but NOT all of them use direct port injection,and a fuel pressure return regulator with a return line and most of those current systems use a fuel pressure of at least 35 psi-40psi which the standard carb fuel pump with its 6-7 psi won,t supply

theres some TB injection systems that work on much less fuel pressure but in most cases still will above the 6-7 psi level.

 

bits of INFO

 

carbs

 

http://auto.howstuffworks.com/question377.htm

 

http://www.roadkill.com/~davet/moto/carb.monologue.html

 

http://popularhotrodding.automotive.com/60684/0802phr-how-carburetors-work/index.html

 

TBI

http://autorepair.about.com/cs/generalinfo/l/bldef_791.htm

 

http://www.goingfaster.com/spo/tbi.html

 

MPFI

http://www.youtube.com/watch?v=ufsOIOQmFHc

 

http://auto.howstuffworks.com/fuel-injection.htm

 

http://www.autoshop101.com/forms/h20.pdf

 

http://www.customefis.com/GMEFI.html

 

http://www.holley.com/data/Products/Technical/199R10179-2.pdf

 

http://www.popularhotrodding.com/enginemasters/articles/hardcore/0305em_holley/index.html

 

http://www.holley.com/91503201.asp