EGT

[Dave Williams]

-> so Dave, how do you use your EFT?  If you can't actively vary
-> your fuel ratio seems t'me all you've got is a temperature.
-> You need to know the peak (which means varying the mixture
-> until temp peaks).  Elsewise, how is it of any value?

 Since this particular car is carbureted, it involves playing with jets,
needles, and springs.  <grin>

 For EFI, EGT would be effective in two modes.

 1), "oh shit!" mode, to tell the ECU something has gone drastically
wrong with the fuel system and the engine has leaned out to cutting
torch temps - sucked a bubble in the fuel line, pump died, trash blocked
the fuel pickup, debris crimped the fuel line, that sort of thing.

 2) cruise.  The EGT would provide a decent steady-state override on a
speed-density system, letting you set the mixture in man~ana time.  You
could do it with MAF too, though it'd be easier just to calculate it.
The EGT could also provide a backup if the MAF failed.

====dave.williams at chaos.lrk.ar.us========================DoD#978=======
  can you help me...help me get out of this place?...slow sedation...
ain't my style, ain't my pace...giving me a number...NINE, SEVEN, EIGHT
==5.0 RX7 -> Tyrannosaurus RX! == SAE '82 == Denizens of Doom M/C '92==