What is a DFI & ECM? How do you modify them? If I have one how can I improve on it performance?

Rob

------------------
Chevy 2.8L 60° V6
Mods:
•K&N Filter Lid
•87 Formula Hood
•Bosch Platinum +4
•Hi-Flo CatCo CAT
•Flowmaster 80 Series Muffler
•83 Trans Am 15x7 Turbo Fin Wheels
•B.F.Goodrich Radial T/A 225/60-15
•Chevy 2.8L Heddman Headers (Going on soon)


http://www.geocities.com/fiream/RobsCarArtPa.html?994187591828

 

Guido, you still think the board name is irrelevant?

Fiream: DFI is an aftermarfet EFI system, manufactured by Accel, designed to replace the factory ECM. Software is included with the DFI that allows tuning.

An ECM is the factory computer that controls fuel injection.

 

So what dose an ECM do one my carbed 2.8?


------------------
Chevy 2.8L 60° V6
Mods:
•K&N Filter Lid
•87 Formula Hood
•Bosch Platinum +4
•Hi-Flo CatCo CAT
•Flowmaster 80 Series Muffler
•83 Trans Am 15x7 Turbo Fin Wheels
•B.F.Goodrich Radial T/A 225/60-15
•Chevy 2.8L Heddman Headers (Going on soon)


http://www.geocities.com/fiream/RobsCarArtPa.html?994187591828

 

DFI stands for digital fuel injection and is usually associated with Accels aftermarket fuel injection systems. (Since they call it DFI). ECM stands for electronic or engine control module. This is usually associated with any engine controller. In your case, I'm not even sure if you have one. If you do (any wires going to your carb?) they would control idle and mixture (ie rich/lean), in conjunction with some other sensors like O2 and temp.

For fuel injected cars, one can change the fuel tables as modifications are made to the engine. For example, cam A might require more fuel at a certain RPM than cam B to make the best power.

Different systems have more or less the same control over the engine. It's a matter of how well they control, how many added features they have, and how easy they are to program. The factory system is probably the best, but it wasn't designed to be easily changed.

------------------
Bob '89 Ram Air Formula 350
And until that time when death won't wait, let each man rage against his fate. (O'neill)
My car's homepage
Rider's Ride

[This message has been edited by RCR (edited August 15, 2001).]

 

I could be wrong but I think that when Guido said "who cares?" that he was talking only about the name of this board, not the relevance of it.

 

I was talking about the board name.

I still say no big deal.

------------------
-86 IROC
11.31 @ 120.2 mph
-=ICON Motorsports=-

 

My thoughts on this naming convention, fwiw:

Using acronyms to abbreviate functions or objects can get more people confused and bewildered to a point that many of us wonder what good are they to begin with. Take for example "ECM" (Electronic Control Module), which also can be related to "EEC" (Electronic Engine Control) used by Ford, "EMS" (Engine Management Sytem), "EFI" (Electronic Fuel Injection), "FMS" ( Fuel Management System), FMU (Fuel Management Unit). "DFI" can also stand for "Direct Fuel Injection".

FMS and ECM are probably the most widely used, IMO, from what info has been made available alluding to the topic of using aftermarket engine control systems. I think this board would be better defined if no acronyms are used.
How about "Aftermarket Engine Management" which narrows it down to anything other than GMs EPROM stuff and can include eveything from Haltech To Electromotive to Greddys "REBIC IV" to Caroll Supercharger's "Superfueler"?