The log shows the idle switch signal on even when the map signal show that either the throttle is open or there's a big intake air leak. The idle switch signal kills the fuel completely when rpm is above the idle control range (~1850 rpm).
----- Original Message ----- From: "Matt Bennett" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, September 06, 2008 7:39 PM Subject: Bucking, DLL help > Howdy folks, I'm trying to figure out my latest issue, I seem to remember > this type of problem being discussed before, but I didn't take adequate > notes. Right now, the most annoying problem I have is that my car has > some very abrupt on/off transitions- also the "idle oscillation" is pretty > bad. You can see both of these characteristics in this (really long) log: > > <http://www.hazmat.com/~mjb/projects/miata/DataLogs/2008-09-06a.bin> > > The vitals on this car: > 1996 with prototype Ubercharger (intercooled, with air temperature sensor) > 550cc Injectors > Vishnu Dual feed fuel rail > Link ECU (non OBD- I believe that this is referred to as a 94-95 Link) > AEM WB02 > Stock engine internals > Setup for (but not installed) NB02 > > > Another thing I'm thinking of- I realize that tuning on the road is > difficult, dangerous, and often runs afoul of the law- has anyone created > a script for the most cost effective way to use a dyno? The one that I > can rent time on is a brake dyno (not a Dynojet). I want to tune for 1) > emissions and 2) power with drivability- and 1 and 2 don't have to be the > same map :) > > The vast majority of the adjustments appear to be with fuel- is it because > changing fuel zones is easier and more effective than adjusting timing? > Or is timing just a lot more dangerous to play with. > > With the 94-95 link, can I have both WB and NB O2 sensors logged? I > realize only one will actually be adjusting settings. If I tune for one > sensor, will I need to change maps when I move between sensors, or can I > just do it through the Link keypad? > > I realize I need to sit down with the tuning manuals from FM- I went > looking on Flyin' Miata's site and didn't find the Link tuning manual- > I've got an old copy- what is the latest revision? > > Regards, > > Matt Bennett > Austin, TX > '96 with prototype Ubercharger > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
