EGT for feedback

[Stuart Woolford]

> I'm new to the list and to the whole DIY-EFI thing in general.  All the 
> recent talk of O2 sensors has got me wondering about another source of 
> combustion feedback.  Has anyone tried using exhaust gas temperature for 
> fine-tuning the intake mixture?  It would seem to me that you could lean 
> the mixture to increase EGT or richen to lower EGT.  If you'd done some 
> initial tuning with a gas analyzer to determine an optimum temp, this 
> would work.  Any thoughts?

I believe the local jet boat racers use that, on custom comupters 
(well, at least my bosses brother, who races jetboats, does..) - you 
would not BELIEVE what they paid to have this system designed (theres 
a sucker born.....)

however, I believe it works well, and is fast, and it easyish to run 
1 per cylinder. The biggest problem is the EGT sensors designed for 
this application cost a fortune! - I would just re-package standard 
TC wire (type-N, probably..) in a through-drilled bolt to hold it..
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Stuart Woolford, stuart at spectel.co.nz

                      >>>>In VI Where Available<<<<
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