Some tuning questions, likely should be 2 threads...

[roccit_53 at scirocco.cs.uoguelph.ca (C Boyko)]

Okay, this is for both of mine, and they're pretty different. 

First, her "silver spitefulness", my CIS-E 16V. She's got no big running
issues, she idles well etc, but she's too slow. I'm mucking around with the
usual stuff, new fuel filter, cleaned the K&N, new plugs, cap and rotor,
oil and filter, and so forth, mainly because she's due anyway. I had
previously checked DPR, it's fluctuating around 5.5 or 6mA, which should be
slightly rich. I haven't checked ignition timing yet (did it like last
fall), but have verified that I am in fact using the right flywheel timing
mark, it's so hard to see on 16Vs, and I'll check it shortly. I just did a
compression test on her (cold), and figured I'd repeat it on a warm engine
if there were any concerns, I got 182/182/186/181 so I'm not doing it over,
that's probably not a concern from the looks of it. I also checked that the
throttle switches are activated with the pedal matted, that all looks fine.
I'll check electricals on that if needs be, but it tested out fine when I
checked it recently.

So, back to basic stuff, finally here's my question: airflow rest plate
position, it's low by a few mm, I noticed this right after I did the fuel
filter and figured I'd verify that it really WAS low with pressure in the
system and in fact it is. How badly will adjusting this throw off the
mixture at idle? I guess I'll find out eh? Just wanting to rule out any
engine bay issues before I look into other possible causes and put hubby on
a diet...

Next question, for my MkI on MS, regarding analog outputs on my Innovate
wide band... so my AFR guage is not working at all, it did work briefly
then stopped working. I checked in the Innovate programmer software, and it
shows the right voltages for the two outputs. The MS AFR guage isn't
reading quite the same as the Innovate controller, it's off by a few tenths
(which may be a delay setting somewhere that I have yet to find). I did a
fresh air recalibration, no change. Right now it reads very rich at idle,
and the car is very rich, so I guess it's basicly working. Anyway, how's
THAT for on topic? :P
Cathy