• Got the Contributing Memberships stuff finally worked out and made up a thread as a sort of "How-To" to help people figure out how to participate. So if you need help figuring it out, here's the thread you need to take a look at -> http://www.corvetteflorida.com/forums/showthread.php?t=3581 Thank you, everyone! Rich Z.

Tuning log for the C5Z

05-02-2013 - Tune #21 - Log - 0013

{B5936} - reduced values x 0.2

{B5934} - reduced all cells

{B5924} - Changed "not in gear" cells from 0.0 to 3.0

{B5915} - Raised low limit for 0 to 400 from -12.0 to -8.0


No change in problem (whatever it was.....)
 
05-03-2013 - Tune #22
Reverted back to tune #20

Logs 0015 and 0016

{B5936} - all values x 1.5

{B5934} - all values zeroed

{B5924} - Not in gear -> 8.0

{B5915} - 0,4,800,1200 -> -3.0

{B4506} -> 0.0

** no change
 
05-04-2013 - Tune #23
Reverted back to tune #20

{B4603} - raised rows 46 to 90 to 1054

{B4338} - In Gear changed from 0 to 4.0

{B4339} - In Gear changed from 0 to 1.00 (40 to 111)

{B4307} - increased In Gear cells 68 to 111

{B4308} - increased cells 32 to 104 to 3.00

{B4304} - increased 40 to 104 +2.0

{B4342} - changed from 0 to 50

{B4343} - 40 to 111 +2 and smoothed

{B4345} - made all cells 200

{B4604} - changed from 200 to 400

{B4501} - changed from 176 to 60

{B4512} - RPM decreasing
Added +2 to all cells

**No change - rolled back to tune #20
 
05-05-2013 - Tune #24
Reverted back to Tune #20

{B4309} Throttle Cracker in Gear
0 mph cells 400 to 1600 -> 0.00 to 0.03

{B4349} ETC Throttle Area Conversion
Changed from 0.0255 to 0.0330

{B4307} Desired Airflow
Cells 40 to 133 x 1.3
In Gear copied to Park/Neutral

{B4603} Desired Idle Speeds
In Gear copied to Park/Neutral

{B4310} Throttle Cracker Airflow in P/N
0 mph changed from 0 to 0.03

{B4313} Throttle Cracker Decay Rate
0 mph changed from 0.01 to 0.10

{B4604} Startup RPM Offset
Copied In Gear to P/N

{B5932} Base Spark In Gear
0 to 1200 rpm x 1.2

{B5933} Base Spark in P/N
0 to 1200 rpm x 1.2

{B5915} Minimum Spark Advance
0 to 1600 added -6

{B4205} Closed Loop Temp Enable
IAT 68 and above changed from 92 to 82

{B4203} Closed Loop Norma Temp
158 -> 82

{B4204} Closed Loop Normal Temp Timer
16 -> 10
 
05-05-2013 Tune #24a

{B4307} Desired Airflow
Reduced 90 to 133 20%
 
05-05-2013 - Tune #24b

{B4604} Startup RPM offset
68 to 284 sloped to 0

{A0008} Open Loop ECT Commanded Fuel Multiplier
20 thru 20 reduced

*Idle still oscillates after blipping gas pedal

*Idles too high when clutch depressed coming to a dead stop. At dead stop, idle is fine.
 
05-08-2013 - Tune #25

{B4522} Stall Saver RPM
1300 to 1500 changed from 1000 to 900

{B4601} Max Idle RPM In Gear
1200 -> 950

{B4614} RPM Set Point Adjust Timer
0.500 -> 0.100

{B5932} Base Spark In Gear
Copied from Tune #20

{B5933} Base Spark in P/N
Copied from Tune #20

** RPMs still too high coming to a dead stop.
 
05-09-2013 - Tune #26

{B5916} Base Spark Closed Throttle Threshold
1.19 -> 20.0

{B5917} Base Spark Vehicle Speed Threshold
254 -> 1

{B5920} Spark Smoothing Enabled
Disabled

** No changed. Rolled back to Tune #12
 
05-10-2013 - Tune #27
Reverted back to Tune #12
Using differences chart for Tune #24

(1) Made changes to fan speeds.

(2) {B4349} ETC Throttle Area Conversion
0.0255 -> 0.0330

(3) {D2001} - {D2004} - Removed transmission abuse limits
All above tables copied from Tune #24
 
05-10-2013 - Tune #27_0001
Reverted back to Tune #24

{B4307} Desired Airflow
(1) Cold start without stalling
(2) Idle is high when coming to a dead stop but appears to go away with higher coolant temps.
 
05-11-2013 - Tune #27_0002

{B4307} Desired Airflow
(1) Copied table from "3rd Tune".
(2) In Gear values -40 to 111 increased 10 percent
(3) Values 176 to 284 reduced 10 percent
(4) {P0300} Engine Misfire Detected -> Enabled
 
05-13-2013 - Tune #27_0004

{B4307} Desired Airflow
-40 to 111 reduced 10% and smoothed

**Cold start is better but still goes a bit unstable after punching the accelerator pedal.

**Timing trace is real jagged at low cruising speeds.
 
05-14-2013 - Tune #27_0005

{B5920} Spark Smoothing - Disabled

{B4307} Desired Airflow
-40 to 111 reduced by 10%

Set to Open Loop

{B3313} DFCO Temp Enable
86 -> 252

{B3618} PE Modifier Based on RPM
Made all values 1.00

{A0008} - made all values 1.00

{B3801} Long Term Fuel Trim Correction
Disable (already set)

{B4108} STFT Idle Enable
Disabled

{B4205} Closed Loop Temp Enable
All set to 284 degrees

{B4105} 02 Switch Points
Made all 450mv

{B4203} Closed Loop Normal Temp
158 -> 284 (disabled)

{B4101} Closed Loop Idle Vehicle Speed
15 -> 0

{B4103} Closed Loop Idle Throttle Position
5.00 -> 0

{B4102} - Changed to 0

{B4104} - Changed to 0

**Runs REALLY lean at cruising speed on dirt road. Aborted QUICKLY!!
 
05-15-2013 - Tune #27_0006
Reverted back to tune #27_0004

Adjusted torque MAX to 640 where needed.

{B0101} - Values multiplied from MAP results taken while in open loop.

{B4205} Closed Loop Temp Enable
Set all values to 284

**Still went into Closed Loop! Otherwise runs pretty good.
 
05-16-2013 - Tune #28_0001

{B0101} Main VE Table
Copied cells from MAP_A

{B3647} Commanded Fuel vs RPM (Normal)
Changed all 1.00 values to 0.99

**Does not go into Closed Loop

** Runs fine but appears to have AFR a bit rich.
 
05-20-2013 - Tune #28_0002

Data logged on 05-21

{B3632} After Start Coolant Temp Enrichment
111 to 284 changed to 0

{B3663} Additional After Start Enrichment
111 to 219 changed to 0

{B3665} Additional After Start Enrichment Active
111 to 219 Changed to 0

{B3647} Commanded Fuel vs RPM
All 0.99 cells changed to 1.01

{A0008} Open Look ECT Commanded Fuel Multiplier
Changed all to 1.00
 
05-21-2013 - Tune #28_0003

Data logged on 05-24

{B0101} Main VE Table
Copy and mulitply using MAP A scan data
 
05-24-2013 - Tune #28_0004

Data logged on 05-27

{B0101} Main VE Table
Cut and pasted values from MAP I scan data

{B3647} Commaded Fuel vs RPM
Changed cells back from 1.01 to 0.99
Filter (calc.vet) applied to data
 
05-27_2013 - Tune #28_0005

Data logged on 05-28

{B0101} Main VE Table
Cut and paste from MAP A and smoothed

{B3618} PE Modifier Based on RPM
Set as per page 238 in Master EFI Tuner GM EFI book

{B5936} Idle Underspeed Error
Copied from stock Z06 tune

{B4603} Desired Idle Speeds
Lowered 90 to 284 by 50 rpm

{B4522} Stall Saver RPM
Lowered all values by 100 rpm
 
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