To me it seems that the computer is whats holding us back.Why not un hook it,run a hot wire to the injectors and use your oxygen with a meter to see if it is rich or lean?What i am getting at is running bigger injectors on any motor,esp.after market like a Holley pro with a 4bb intake.The injectors only need voltage to spray and a fuel pump to pump fuel.Then use a meter to check richness or lean.Is this a crazy idea or can it be done.If so think of the possiblities.

 

The computer controls the injectors. Without it, you dont have EFI.

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West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

If you hotwire the injectors to some kind of device that measures Oxygen and compensates for it then I believe that would be another type of computer. It computes things

 

Exactly!

 

I am talking about putting fire to the inj. without a comp.using avolt meter like the tech article says to see if you are rich or lean.I have heard of some people doing this but do not know if it was possible.

 

no it isn't

not even close

 

Dude, you need to read up on how your engine works. The computer is not what is holding your engine back, its the mechanical components like the cam and heads. The computer is fine.

ODB, those books are great. I bought volume 1 and 2 and have read both. They Reaffirmed my first thoughts about how a tbi should be built. Thank you so much.

 

LoL, Isn't it Called Carberaution?

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Eric Natzke
91 Firebird 305 TBI
"It Ain't Stock"
http://members.aol.com/j007golden/91firebird.html
For info on certain parts or mods go to the site below
http://members.aol.com/j007golden/modeval.html

 

There is nothing wrong with the computer. Without it you wouldn't have EFI, you wouldn't have WOT combinsations. The computer also uses more than just the oxygen sensor. It uses the IAT, knock, and water temp to control the injectors. If you did it mechanically it would be called a carb. Advantages of EFI is they take into lots of considerations and self correct so you don't have too keep tuning. The computer is great, the chip is okay, the cam, the heads, exhaust, and intake manifold are what's the problem. Replace them and reprogram the chip and there is no problem.

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, Jon (91 RS too many mods to list)

 

There is ONE way to have fuel injection without the computer. That's to install an old mechanical fuel injection system. You won't get nearly the accuracy in fuel control though...

 

thanks thats all i needed to know.to the other dude,I know how my car works and yes the computer does hold it back.Why do think there is a tech article on proms? A carb with the stock stuff would get better performance but suffer fuel milage.

 

the prom is not the computer. technically. but i dont want to be stupid.

what we were trying to say is, the computer is not the WORST part of the l03. the larger problems with the engine are the heads exhaust and cam.

btw, welcome to thirdgen.

 

Actually,the 305 its self is the problem!!!

 

Keep digging dude you might hit China.