Flyin' Miata : 1996-97 "Obiwan" ECU software version history

Date	Chip number	Changes
4/12/2003	MSTR0412	This is the software we have sent to the first 6 customers. It does have a known data logging bug.
5/1/2003	MSTR0501	Added L4 on/off control (z800 '4' ), whereas on 4/29 L4 was always on. L3 was modified to hold its current value during a 'letter event' (e.g.'T' caused by accel/decel) if the zone doesn't change. Previously any 'letter event' would always force L3 back to 5.
5/6/2003	MSTR0506	Removed L4 on/off control Fixed bug that caused the AC fan to come on during first few seconds after key-on. Fixed bug that caused choke to decay way too fast during first 16 seconds after start. Fixed bug that caused the serial port reload command to load garbage. Raised default O2 targets for rows 1-2 by one point.
5/21/2003	MSTR0521	Changed log char for "map too low for L3 adjustment" from * to M. Changed keypad rpm display so that * works as expected. Changed temperature curve for initial choke value so that it doesn't decrease so much when temperature is higher and doesn't increase so much when temp is lower. At 20C there is no difference from before.
6/7/2003	SLAVE	Disabled knock sensor while overrev ign retard (redline soft cut) is in effect.
6/9/2003	MSTR0609	Fixed knock count CEL illuminates when knock occurs Z800 disables L4
6/10/2003	MSTR0610	Moved speedo ctr carry/ovfl bits from "roll" to flags7 bits 7-6 Deleted some unused vars and added "mapsm" (currently unused) Restored L4 on/off control (disable bit, z800 bit 2) Added missing knock count Add CEL for knock events
6/26/2003	MSTR0626	Added z800 control bits Reduced CEL time to 1.5 sec Added low-MAP fuel smoothing Doubled fuel computation rate to 62 times/sec Disable L4 modification while EGR active
7/7/2003	MSTR0707	Fixed fueling bug during PRC on time following rolling restart Fixed plastic-chip bug Added support for on-board ATM sensor Added support for speedo input (not very good)
7/8/2003	MSTR0708	Change to unified log/zone file format
7/9/2003	MSTR0709	CEL illuminates for 2.5 seconds on start up Better NA defaults
7/10/2003	MSTR0710	Fixed NA fueling bug Removed intermittent WG ctl time interrupt Added speedo filter (better, but still not very good)
7/11/2003	MSTR0711	Reduced temp at which prime fuel tapers down to minimum Removed debug code used for testing plastic chip problem
7/14/2003	MSTR0714	Changed to new WBO2 datalog format
7/30/2003	MSTR0730	New NA defaults EGR default to on
8/9/2003	MSTR0809	Added automatic atm sensor detection Added AC fan disable when engine stopped/stalled
8/30/2003	SLAVE	Allowed PRC on before engine run Added viewable subVersion number at $02 (zero for this chip) Removed intermittent IAC ctl time interrupt
8/25/2003	MSTR0820	CEL knock indicator can now be shut off by adding 16 to Z800.
11/9/2003	MSTR1109	Suppressed decel fuel if falling map not accompanied by falling tps, "T" status not suppressed though.
11/28/2003		ACCEL fuel proportional to CHOKE fuel when choke is on.
12/7/2003	MSTR1207	Increased accel fuel when choke active Allowed zone upload with trans in gear if engine not running
12/16/2003	SLAVE B	Allow closed-loop idle up to 1800 rpm instead of 1500. Fix double-ipoint-increase bug. Reduced max map for EGR operation from 110 to 95 Added setup-jumper-detect filter. Added smooth IAC-off/on as TPS opens/closes over 1st 10 pts
3/30/2004	MSTR1530	Made prime proportional to master fuel setting Allowed ATM sensor to operate at higher altitude
4/18/2004	MSTR1618	Added z815 control of VICS (via O2 heater output)
5/2/2004	MSTR1702	Added logging of prime in INJW of 1st log line Increased startup fuel reduction rate when NB O2 is too high Added dwell output to slave Changed fuel to use actual zones during cranking instead of z100 Fixed startup EGR fuel compensation math overflow bug Added logging for slave's CAS glitch detector, Rev C slave required to operate this
	SLAVE C	Added support for WB/NB combo autotuning mode Added alternate EGR schedule (operates at slightly lower map) Fixed a bug that made the VICS tick when the engine is stalled Changed purge from fixed to variable duty cycle Added capability to choose between two EGR schedules Added CAS glitch detector Added idle-range progressive ign temperature compensation (advance below 94C, retard above 94C). Added overall progressive ign advance below 10C Fixed a bug that raised ign zone map centers in previous chips by 8 kPa
7/2/2004	MSTR1902	Added EGR control zone z810 The number (nominal value=100) determines how much fuel is pulled to compensate for EGR gasses. If z810 is an even number, the alternate EGR schedule is used. Rev C slave required for this function. Added separate master CAS glitch detector Changed (reduced) decel fuel curve at low end Increased cold fuel compensation below 50C Added CAS error display to rpm screen Added low-temp boost reduction (approx 1 psi per 10 degC at 15psi boost) Made WBO2 L3 reaction time faster Added display & logging of Slave code version Added WB/NB combo autotuning mode. z26 is NB O2 target for rows 1 and 2 when map < 64, z27-z31 are WB O2 targets for rows 2-6 when map>64. Rev C slave required for this function. Replaced rpm-screen map version display with tps display
	SLAVE D	Disabled fixed IAC in setup mode when L3 is off since it's only needed for the smog police Added higher idle rpm for a few seconds after hot restart Delayed cranking-80%-IAC cutoff until rpm>1K
8/22/2004	MSTR2022	Changed temperature compensation curve for prime to reduce fuel above 32C unless air temp is high (i.e. car has been sitting hot for a while). Changed temperature compensation curve for short-term post-cranking enrichment to increase fuel between 50C-90C. Changed log and keypad to display the actual prime pulse width in INJW until cranking begins. Reduced minimum injw from 135 to 115. Increased low-power lambda integration time.
2/7/2005	MSTR2607	This revision fixes the NA default not going to zf100 at idle. Fixed non-functional FP-off log indicator. Increased choke and prime temperature compensation slope below 16degC. Removed L3 freeze during very slowly falling MAP.
2/15/2005	MSTR2615	Removed L4 fuel correction when not idling (idle sw and neutral sw both on).
3/8/2005	MSTR2708	Removed Z800 bit setting for disabling ATM sensor. Added Z800 bit setting (add 8) to disable cold weather boost reduction. Changed from no-accel/decel below 500 rpm to no-accel/decel when idle-neutral switches on. Fixed bug in accel lockout when map within 15kPa of boost target. Fixed bug that allowd fuel zone interpolation during idle-neutral. Added knock sensor display to Quick-Check keypad screen (aka RPM screen). Keypad editing of Z5 is now allowed when the engine is not running. Added Z800 bit setting (add 64) to disable ign timing reduction during soft rev limit, requires Rev F Slave to be functional.
3/8/2005	SLAVE F	Added bit to disable ign timing reduction during soft rev limit (boost reduction is still there), requires 3/08/05+ Master to activate the disable using Z800 bit setting (add 64).
3/27/2005	MSTR2727	Complete revision to all defaults
4/20/2005	MSTR2820	Further default revision
4/26/2005	MSTR2826	Default fix. Z820 and Z835 were transposed.
8/31/2005	MSTR3231	Bug fix. Accel pump had been disabled since 2-12-05
9/01/2005	MSTR3301	Bug fix. Mislabelled TURBO 2 defaults have been renamed SUPER. The numbers are unchanged.
Current chips being shipped: MSTR3301, SLAVE F

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