10 vT EM? NOW G-tech Pro

[Marc Swanson]

> Nah, the fuel maps are good, but this is making it
> hard to keep them consistent since the mixture changes
> a little based on how much the timing is advanced.

I figured you'd probably covered that base.

> That's exactly what happens, if you unplug it or
> unscrew it and go for a drive around the block you
> will have a check engine light that goes crazy, and
> hardly any power.

I'll have to try that on my 90 to see what happens...

Note that if you really want to debug this thing further, you could
substitute a resistor for the knock sensor pins to fool the computer into
thinking it is connected and seeing if your car still retards.  It shouldn't
at that point.  But you've got a new knock sensor coming so that'll work too!

> Also
> simply by unscrewing the knock sensor and leaving it
> hanging, it will go to full retard, so that tells me
> it may still be trying to get more advance, but since
> it isn't sensing knock it goes to full retard.

that doesn't make sense to me.  Why would the ECU back the timing way off if
it isn't sensing knock?

>  Or
> it's just smart and since it doesn't "hear" anything
> it goes to full retard.  I've been thinking about this
> WAY to much!

What makes you think that?  The ecu should be advancing things or doing
nothing at all if the engine is running smoothly..... (ignoring issues like
idle conditions).

Later

-Marc-
87 4ktq
88 90q