eec egr scheme

[James Weiler]

Uhmmmm john.  I don't know about fuel delivery but the main difference is 
ignition timing.  When the ECU opens the EGR valve (and the EGR valve 
position sensor confirms this) then ECU also advances the timing.  This 
is to make up for the leaner mixture because lean mixtures burn slower 
thus the advance timing.  The ECU does not lean things out at all.

What kind os EEC-IV do you have? i.e. speed density (MAP) or mass air 
flow (MAF) ??
If you have MAF then don't worry about the size difference the MAF will 
compensate.  What is your 215? Is that a Buick, I mean Rover V8 ??

HTH
jw


On Sat, 6 Jun 1998, Jon wrote:

> I'm getting ready to fire for the first time my eec-iv on an old 215 and
> here's an idea for dealing with the vast difference in size. I don't
> plan on using the egr valve (can't find a place to put it) but I figure
> if I install just the sensor, and ultimately a fixed resistor, I ought
> to be able to trick the controller into thinking there's always exhaust
> gas present in the charge and therefore less fuel will be delivered. Is
> this better then reducing fuel pressure, which I guess will degrade
> injector performance?  Jon
>