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Introduction


Updated 1/7/07

This page will highlight the differences between the A9L, A9P, and X3Z. 

All info on this page came from a spreadsheet created by Clint Garrity (creator of EECAnalyzer).  The site the spreadsheet was originally posted on is no longer in existence.  I have posted the original spreadsheet (the version I have anyway) on my site, here:  http://www.freewebs.com/vristang/EEC_Comparison.xls

If you find a version of this spreadsheet that Clint is maintaining, please let me know, so I can link directly to it.
 



Scalars


Description A9L A9P X3Z Units
GUFB GUFB GUFB
A/C Engage Maximum Temperature 242 242 242 Deg F
A/C Engage Maximum Temperature Hysterisis 8 8 8 Deg F
A/C Minium Time Before Fan is On 3 3 3 Seconds
ACT Maximum For Adaptive Control 200 200 200 Deg F
ACT Minimum For Adaptive Control 100 100 100 Deg F
Accel Pump Multiplier - Global 0.39063 1 0.79688  
Adaptive Control Maximum 0.62109 0.62109 0.62109 Lambda
Adaptive Control Minimum 0.37891 0.398438 0.37891 Lambda
Adaptive Idle Low RPM Only 0 0 0  
CL Maximum Lambda 1.3 1.3 1.3 Lambda
CL Minimum Lambda 0.75 0.75 0.75 Lambda
Canister Purge Minimum RPM 1250 1250 1250 RPM
Canister Purge OL Enable 0 0 0 Switch
Checksum Base Address 8192 8192 8192 Hex
Checksum End Address 40958 40958 40958 Hex
EDIS Ignition Present 0 0 0 Switch
EEC Conttrolled Dwell 0 0 0 Switch
EGR Maximum Idle Test 1000 1000 1000 RPM
EGR Multiplier 1 0.898439 1  
EGR Part Throttle Adder 0 0 0  
EGR System Type 0 0 0 Switch
Engine Displacement 301.08 301.08 301.08 CID
Fan A/C Minimum Temp Activate 60 60 60 Deg F
Fan High Speed Disable Temperature 234 234 234 Deg F
Fan High Speed Enable Temperature 242 242 242 Deg F
Fan High Speed Enable 0 0 0 Switch
Fan High Speed Hysterisis 4 4 4 Deg F
Fan Low Speed Enable Temperature 220 220 220 Deg F
Fan Low Speed Enable 0 0 0 Switch
Fan Low Speed Hysterisis 4 4 4 Deg F
Fan Low Speed VSS 40 40 40 MPH
Fan Low Speed VSS Hysterisis 5 5 5 MPH
Fan Minimum Low Time Before High  10 10 10 Seconds
Fuel Injectors Per Output 1 1 1 Integer
Fuel OL Multiplier Time Delay 38 38 38 Seconds
Fuel OL Startup Neutral Multiplier 0.96094 1 0.96094  
Fuel Shut-off Deceleration Minimum ECT 140 140 56 Deg F
Fuel Shut-off Deceleration Minimum RPM 150 6000 1050 RPM
Fuel Shut-off Deceleration Minimum MPH 5 5 20 MPH
Fuel Shutoff Deceleration Time Extended 31 1 5 Seconds
Fuel Shutoff Minimum Time At Part Throttle 6 3 4 Seconds
Fuel Shutoff Part Throttle Enable 0 0 0  
Fuel Shutoff Shifting Maximum Time 0 0 0  
Fuel Shutoff Shifting Minimum RPM 650 650 650 RPM
Fuel Shutoff Time Delay 255 255 255 Seconds
Fuel Shutoff Time Enable 31 2 1 Seconds
Fuel Shutoff For Neutral Maximum Time 2 2 2 Seconds
Fuel Stablized Enable 1 1 0 Switch
Fuel Time Constant Time Multiplier 0.5 1.5 0.5  
HEGO Minimum Switche Before Warm 1 1 1 Integer
HS Fan - High Load MPH 40 40 40 MPH
HS Fan - High Load Minimum 1.5 1.5 1.5 Load
HS Fan - High Load RPM 226 1808 226 RPM
ISC A/C RPM Adder 24 24 0 RPM
ISC Air Neutral To Drive 0 0 0  
ISC CL Above Idle RPM 150 125 150 RPM
ISC Maximum Closed Throttle RPM 850 750 950 RPM
ISC Maximum Drive RPM 824 824 824 RPM
ISC Startup Kickdown Time 25 25 25  
ISC Startup RPM Adder 16 0 30 RPM
ISC Startup RPM Time Adder 80 0 8 Seconds
Idle In Gear 672 624 672 RPM
Idle In Neutral 672 672 672 RPM
Ignition Cylinder ID Present 0 0 0 Switch
Ignition Cylinder ID Type 0 0 0 Switch
Injector Delay Global 0 0 0  
Injector Slope High 19.642 19.642 24.84 Lbs/hr
Injector Slope Low 26.1 26.1 24.84 Lbs/hr
Lad Scaling Switch 0 0 0 Switch
Lugging Minimum Time For OL 5 5 1 Seconds
MAF Max RPM For Max Voltage Test 4500 4500 4500 RPM
MAF Voltage Maximum 4.7852 4.7852 4.7852 Volts
MAF Voltage Minimum 0.36621 0.36621 0.36621 Volts
MIL Light Switch 0 0 4.5  
Maximum High Speed Dwell 0.2 0.2 0.2  
Max Low Speed Dwell 0.5 0.5 0.5  
Min Load For Closed Loop Fuel Control 0.005004 0.005004 0.005004 Load
Min Load For Open Loop Fuel Control 0.005004 0.005004 0.005004 Load
Number Of Cylinders 8 8 8 Integer
Number of HEGO Sensors 2 2 2 Integer
OL Idle Maximum Time 255 255 255 Seconds
OL Lugging Mode Maximum ECT 220 220 220 Deg F
OL Lugging Mode Minimum ECT 254 254 254 Deg F
OL Lugging Mode Minimum Load 0.98999 0.98999 0.20001 Load
OL Lugging Mode Minimum Load Hysterisis 0.0299999 0.0299999 0.029999 Load
OL Throttle Breakpoint 2.71 2.71 2.71 Volts
OL Fuel Multiplier - Global 0.99609 0.99609 0.99609  
PIP Filter 961 961 961  
Part Throttle Breakpoint 0.039062 0.039062 0.029297 Volts
Part Throttle Spark Multiplier 1 1 1  
Rev Limit Half Fuel Off 7500 6100 5500 RPM
Rev Limit Half Fuel On 8000 6200 6250 RPM
Rev-Limit Maximum RPM (No Fuel) 7000 6200 7000 RPM
Rev/PIP Minimum Period for 6 cylinder 1282 1282 1282  
Shift Light Maximum RPM 5000 5000 5000 RPM
Spark & Fuel Lugging Time Limit 4 4 1.25 Seconds
Spark Adder For Closed Throttle 0 0 0 Degrees
Spark Adder for Neutral 0 0 0 Degrees
Spark Adder For Part Throttle 0 0 0 Degrees
Spark Adder For WOT 0 0 0 Degrees
Spark Knock Advance Limit 0 0 0 Degrees
Spark Knock Minimum ECT 0 0 0 Deg F
Spark Knock Minimum RPM 8000 8000 8000 RPM
Spark Knock Sensor Present 0 0 0 Switch
Spark Lugging Timer Switch 1 1 1 Switch
Spark Retard For Knock Sensor 0 0 0 Degrees
Spark Tip-In Advance Per PIP 0.25 0.25 0.25 Degrees
Spark Tip-In Maximum Advance 0 0 0 Degrees
Spark Tip-In Maximum RPM 0 0 0 RPM
Speed Limiter A 127.5 127.5 127.5 MPH
Speed Limiter A On/Off 127.5 127.5 127.5 MPH
Speed Limiter B 127.5 127.5 95 MPH
Speed Limiter B On/Off 127.5 127.5 95 MPH
Thermactor Present 1 1 1 Switch
Throttle Body Air Flow 0.55005 0.55005 0.55005 Kg/hr
Time @ High Load To Force OL 2 2 8 Seconds
Transmission Load Type 3 4 3 Switch
Transmission Strategy 0 0 0 Switch
WOT TPS Breakpoint Voltage 2.71 2.71 2.71 Volts
 



Functions


Description A9P A9L X3Z
X Y X Y X Y
Accel Enrichment Multiplier vs BP 0 0.5 0 0.5 0 0.5
20 0.625 20 0.625 20 0.625
28 0.875 28 0.875 28 0.875
30 1 30 1 30 1
31.875 1 31.875 1 31.875 1
Accel Enrichment Multiplier vs TP 0 1 0 1 0 1
0 1 0.977 0.953 0.977 1
0 1 2.207 0.297 2.207 0.547
2.4414 .75 4.16 0 4.16 0
4.9805 .5 4.98 0 4.98 0
Altitude EGR vs BP 0 0.102 0 0.102 0 0.5
22.25 0.102 22.25 0.102 24 0.5
23.5 1 23.5 1 24.125 1
26.5 1 26.5 1 25.875 1
27.75 0 27.75 0 26 0
31.875 0 31.875 0 31.875 0
Cranking Fuel PW Multiplier vr Time 0 1 0 1 0 1
0 1 0 1 0 1
0 1 0 1 0 1
0 1 0 1 0 1
0 1 0 1 0 1
8191.875 1 8191.875 1 8191.875 1
Cranking Fuel Pulsewidth vs ECT -65536 .038761 -65536 39.691 -65536 32.77
-20 .038761 -20 39.691 -20 32.77
0 .021889 0 22.414 0 18.434
20 .014149 20 14.488 20 13.313
40 .010502 40 10.754 40 10.238
70 .0056992 70 5.836 70 5.121
15 .0023003 150 2.355 150 3.07
180 .0019989 180 2.047 180 1.84
65534 .0019989 65534 2.047 65534 1.84
Drive Engagement vs ECT -65536 1 -65536 1 -65536 1
-65536 1 -65536 1 -65536 1
-65536 1 -65536 1 -65536 1
-65536 1 -65536 1 -65536 1
-65536 1 -65536 1 -65536 1
-65536 1 -65536 1 -65536 1
-65536 1 -65536 1 -65536 1
-65536 1 -65536 1 -65536 1
EGR Multiplier vs ACT -256 0.797 -256 0.797 -256 0
-265 0.797 -265 0.797 -265 0
0 0.797 0 0.797 58 0
56 1 56 1 60 1
254 1 254 1 254 1
EGR Multiplier vs ECT -256 0 -256 0 -256 0.992
100 0 100 0 -256 0.992
130 0.992 130 0.992 -256 0.992
230 0.992 230 0.992 230 0.992
240 0.25 240 0.25 240 0.25
254 0.25 254 0.25 254 0.25
Emissions Table Load Scaling 0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0.05 0 0.05 0 0.05 0
0.1 1 0.1 1 0.1 1
0.6 6 0.6 6 0.6 6
0.75 7 0.75 7 0.75 7
2 7 2 7 2 7
Emissions Table RPM Scaling 0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
700 0 700 0 800 0
1000 1 900 1 900 1
1500 3 3000 3 3000 3
16383.75 3 16383.75 3 16383.75 3
Fuel Enrichment for High Speed 0 0.996 0 0.996 0 0.996
0 0.996 0 0.996 0 0.996
0 0.996 0 0.996 0 0.996
0 0.996 0 0.996 0 0.996
0 0.996 0 0.996 0 0.996
0 0.996 0 0.996 0 0.996
127.5 0.996 127.5 0.996 127.5 0.996
Idle Spark vs ECT -256 4 -256 3 -256 3
-256 4 -256 3 -256 3
-256 4 -256 3 -256 3
-256 4 -256 3 -256 3
140 4 0 3 60 3
150 0 36 0 62 0
254 0 254 0 254 0
ISC Adder vs ACT -256 0 -256 0 -256 0
-256 0 -256 0 -256 0
-256 0 -256 0 -256 0
-256 0 176 0 -256 0
190 0 200 48 192 0
226 24 226 72 208 64
254 24 254 72 254 64
ISC Adder vs ECT -256 568 -256 328 -256 368
-30 568 -26 328 -40 368
40 160 110 72 104 80
100 128 160 72 154 80
154 0 180 0 174 0
216 0 206 0 214 0
226 48 220 48 222 32
254 72 254 48 254 32
ISC Adder vs RPM 0 .03125 0 0.5 0 0.5
0 .03125 350 0.5 350 0.5
0 .03125 450 0.23 450 0.1
2457.5 .033447 600 0 528 0
16383.75 .033447 16383.75 0 16383.75 0
ISC Closed Loop RPM Correction Rate -8191.999 5 -8191.999 5 -8191.999 1
-8191.999 5 -8191.999 5 -8191.999 1
-8191.999 5 -8191.999 5 -8191.999 1
-8191.999 5 -8191.999 5 -8191.999 1
-8191.999 5 -8191.999 5 -8191.999 1
-8191.999 5 -8191.999 5 -8191.999 1
8191.75 5 8191.75 5 8191.75 1
ISC Crank Duty Cycle -256 0.992 -256 0.992 -256 0.992
-256 0.992 -256 0.992 -256 0.992
-256 0.992 -256 0.992 -256 0.992
-256 0.992 160 0.992 110 0.992
-256 0.602 180 0.602 150 0.602
254 0.602 254 0.602 254 0.602
ISC Dashpot Decay Rate 0 .003 0 0.003 0 0
0 0.003 0.062 0.003 0.35 0.006
0 0.002 0.35 0.002 0.4 0.008
0 0.007 0.45 0.007 0.45 0.011
.19995 0.045 0.65 0.045 0.5 0.016
.44995 .007 0.75 0.063 0.75 0.063
16 .007 16 0.063 16 0.063
ISC Dashpot Pre-Position 0 .5 0 0.12 0 0.12
1200 .5 500 0.12 0 0.12
1500 .7 1500 1 500 0.12
5000 .75 2000 1.6 2150 1.6
16282.75 .75 16282.75 1.6 16282.75 1.6
ISC Drive Idle Air Flow 0 0 0 0 0 0
608 .8125 672 0.75 672 0.75
704 1 1008 1.102 1008 1.102
1008 1.6719 1504 1.578 1504 1.578
1104 1.9922 1952 1.992 1952 1.992
4080 1.9922 4080 1.992 4080 1.992
ISC Neutral Idle Air Flow 0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
672 0.75 672 0.75 672 0.75
1952 1.953 1952 1.953 1952 1.953
4080 1.992 4080 1.992 4080 1.992
ISC Neutral RPM Adder 0 0 0 64 0 32
0 0 0 64 0 32
0 0 0 64 0 32
0 0 0 64 5 64
220 0 5 0 120 0
240 48 220 0 128 64
255 48 255 72 255 64
ISC Startup RPM vs ECT -256 200 -256 152 -256 80
-256 200 0 152 -256 80
0 200 20 48 -256 80
76 464 50 48 -256 80
160 176 76 432 10 80
210 104 100 48 26 48
254 104 254 0 254 48
ISC Transfer 0 0 0 0 0 0.1
0 0.1 0 0.1 0.12 0.28
0.12 0.28 0.12 0.28 0.25 0.39
0.25 0.39 0.25 0.39 0.5 0.5
0.5 0.5 0.5 0.5 0.833 0.59
0.75 0.575 0.75 0.575 0.833 0.61
1.5 0.71 1.5 0.71 1.25 0.665
1.975 0.8 1.975 0.8 1.25 0.685
2.12 0.85 2.12 0.85 1.5 0.71
2.31 0.95 2.31 0.95 1.975 0.8
2.35 1 2.35 1 2.31 0.95
16 1 16 1 16 0.95
Idle Spark Vs RPM -8191.999 30 -8191.999 0 -8191.999 15
-8191.999 30 -8191.999 0 -8191.999 15
1400 30 175 0 175 15
1900 32 400 31 350 30
8191.75 32 8191.75 31 8191.75 30
Injector Breakpoint 0 3.045 0 3.045 0 5.008
0 3.045 0 3.045 0 5.008
0 3.045 0 3.045 0 5.008
0 3.045 0 3.045 0 5.008
0 3.045 0 3.045 0 5.008
0 3.045 0 3.045 0 5.008
0 3.045 0 3.045 0 5.008
4095.938 3.045 4095.938 3.045 4095.938 5.008
Injector Offset vs Battery Voltage 0 7.5 0 7.5 0 7
5.5 7.5 5.5 7.5 5.5 7
6 5.531 6 5.531 6 5
7 3.531 7 3.531 7 3
8 2.594 8 2.594 8 2
9 2.031 9 2.031 9 1.5
10 1.688 10 1.688 10 1.313
11 1.406 11 1.406 11 0.906
12 1.156 12 1.156 12 0.813
13 1 13 1 13 0.594
14 0.906 14 0.906 14 0.5
15.938 0.906 15.938 0.906 15.938 0.5
Knock Retard Rate vs RPM 0 5 0 5 0 5
0 5 0 5 0 5
992 4 992 4 992 4
3008 3 3008 3 3008 3
4992 1 4992 1 4992 1
8160 1 8160 1 8160 1
Lugging Altitude OL Fuel Multiplier 0 1 0 1 0 0.5
0 1 0 1 0 0.5
0 1 0 1 0 0.5
0 1 0 1 0 0.5
0 1 0 1 0 0.5
0 1 0 1 0 0.5
0 1 0 1 0 0.5
16383.75 1 16383.75 1 16383.75 0.5
Lugging SeaLevel OL Fuel Multiplier 0 1 0 1 0 0.5
0 1 0 1 0 0.5
650 1 650 1 0 0.5
750 1.203 750 1.203 0 0.5
1200 1.203 1200 1.203 0 0.5
1500 1 1500 1 0 0.5
16383.75 1 16383.75 1 16383.75 0.5
MAF Transfer     0 13.629 0 11.411
0 13.629 0 13.629 0 11.411
0 13.629 0 13.629 0.499 11.411
0 13.629 0 13.629 0.605 14.58
0.571 13.629 0.571 13.629 0.709 18.384
0.75 18.701 0.75 18.701 0.913 26.942
0.884 23.772 0.884 23.772 1.114 37.402
1.091 32.647 1.091 32.647 1.216 43.741
1.182 36.768 1.182 36.768 1.317 50.397
1.321 44.692 1.321 44.692 1.418 58.004
1.468 54.201 1.468 54.201 1.517 65.928
1.574 62.442 1.574 62.442 1.617 75.12
1.691 72.901 1.691 72.901 1.718 84.946
1.803 82.41 1.803 82.41 1.819 95.723
1.89 90.334 1.89 90.334 1.921 107.767
1.989 100.16 1.989 100.16 2.02 120.446
2.154 120.129 2.154 120.129 2.119 134.709
2.316 142.316 2.316 142.316 2.216 150.24
2.45 161.334 2.45 161.334 2.314 167.039
2.582 182.571 2.582 182.571 2.411 185.423
2.694 201.905 2.694 201.905 2.706 248.182
2.91 243.427 2.91 243.427 2.902 296.994
3.149 295.726 3.149 295.726 3.1 351.829
3.355 347.708 3.355 347.708 3.3 412.052
3.544 399.373 3.544 399.373 3.5 477.98
3.886 499.85 3.886 499.85 3.7 549.613
4.177 596.207 4.177 596.207 3.9 626.635
4.443 695.733 4.443 695.733 4.1 709.68
4.768 835.831 4.768 835.831 4.454 870.063
16 835.831 16 835.831 16 870.063
Min High Speed Dwell 0 0.005 0 0.005 0 0.005
10 0.005 10 0.005 10 0.005
12 0.004 12 0.004 12 0.004
13 0.003 13 0.003 13 0.003
15 0.003 15 0.003 15 0.003
4095.938 0.003 4095.938 0.003 4095.938 0.003
Min Low Speed Dwell 0 0.005 0 0.005 0 0.005
10