What Parameters to Datalog

[dongalonga]

Like the title says which ones should I be logging.

[Mindmelt101]

Here is my Development dash... You'll notice that it has a ton of stuff but you can take off whatever you like... I also have another that is for trims etc...

[duster360]

Rev C
20AUG09: add Ambient temp, TM, TIP, EGT and Wg; Removed Baro, PRatio, IPW
19APR10: Removed EGT, Spark Adjust,TURBO WG ADAPT DELTA; Added TURBO TOTAL AF DES FILTD
Dataviewer Dashboard place in MyDocuments/dataviewer/dashboards

Everyday tuning Spark and Fuel ,LOG THESE AT A MINIMUM

Ambient Temperature-->
AMB TEMP--Outside Air temp

Knock control-->
KnK ST Retard--show amount of timing retarded for PCM's instant response to Knock
KNK LT Retard--show amount of timing retarded for PCM's long term or learned response to Knock. If the PCM sees a consitant amount of ST KR, it will use LT KR to try to keep ST at 0.


Spark-->
Actual Spark Cy1( you can do Cyl 2,3,4 also but there's USUALLY little difference)--Final timing advance after all modifiers.


EPDSS-->
RPM

Foundation inputs-->
MPH--Car's speed

Throttle Sensor Input--> *More clearly IDs WOT
THR POSN---Throttle position sensor voltage-~3.6-3.9v = WOT

Map-->
AV MAP TO USE--Absolute pressure inside your intake manifold(Boost = MAP - BARO)
AV TIP TO USE--use min TIP psi as "Baro"

FUEL FLOWS--->
1/1 LONG TERM ADAP--How much your PCM is adjusting the fuel table--Usually under 15% is fine,,Over 20% is baorderline, more than 25% is not fine
1/1 SHORT TEM ADAP--Show instantaneous Upstream O2 sensor adjustment to fuel table
BARO--FOR HANDHELD GUYS ONLY Barometric pressure--Needed for boost calc(Boost = MAP - BARO)

COOLANT TEMP-->
ECT--Engine Coolant Temperature

CHARGE TEMP-->
ACT--Air Charge Temperature--Measured by ACT sensor in cold pipe right before throttle body

DESIRED FUEL AIR-->
OPEN LOOP FA--Commanded A/F that the PCM is trying to reach. 93tune=11.77:1. THIS IS NOT YOUR TRUE A/F!! You need a widband to measure your actual A/F. OLFA is usually anywhere from .2 to 3 points or more different from TRUE A/F.

Torque Mangment-->
TRQ DESIRED--Final Desired Torque the PCM is trying to reach after ALL modifiers applied
TURBO TOTAL TRQ DESIRED = Desired Torque table value (TURBO TRQ POTENTIAL STP) minus most, but not all of the PCM's Torque limits on ECT/Gear/MPH/RPM ect.

Wastgate Control-->
TURBO WG DC--Final WG soleniod duty cycle
TURBO TRQ POTENTIAL STP--Desired Torque value from DT table BEFORE and modifiers. Changing "Boost" on your DSP will change this value
TURBO TOTAL AF DES FILTD--Airflow calculation used to determine what row of the WG DC table to use


The more BS you log the SLOWER the sample rate is. So if you're doing some serious tuning/diagnostics, don't log SHIT YOU DON'T NEED, it will just slow things down. With that said, I have logged over 95 pids at once and the slowest rate I have gotten was 1.2 seconds/sample.

[Mindmelt101]

Yeah what ^^^ he said. lol.

[dongalonga]

Wow thanks this is going to make my life that much easier. Mindmelt101 I emailed that info like you told me as well.

[01StratRT]

Awesome! Good job guys

[starman]

Quote: Originally Posted by duster360

....
INJECTOR--->
AVG TOTAL WORKING PW
....

I can't find that parameter on the handheld

[duster360]

Quote: Originally Posted by starman

I can't find that parameter on the handheld

80% of all parameters(there's close to 200) are NOT in the handheld. PC required

[dongalonga]

Can't wait to hear from Brian. Then I can hit the dyno and do some tuning.

[starman]

Quote: Originally Posted by duster360

80% of all parameters(there's close to 200) are NOT in the handheld. PC required

Thanks, i will try it with my laptop

[KrazyRdR83]

quick question...maybe i keep passing it, but where do you go to adjust the tire size through the DS?

Quote: Originally Posted by duster360

80% of all parameters(there's close to 200) are NOT in the handheld. PC required

so if we wanted to watch more parameters a laptop would be best?

[letxen3]

Quote: Originally Posted by KrazyRdR83

quick question...maybe i keep passing it, but where do you go to adjust the tire size through the DS?

last time i check with brain on this that feature is not available to us. why what size wheel and tires are on your car now I can check if the speedo is off.

[KrazyRdR83]

Quote: Originally Posted by letxen3

last time i check with brain on this that feature is not available to us. why what size wheel and tires are on your car now I can check if the speedo is off.

ahhh that would explain, i'm on the stock rims right now, with 225/45 tires

[letxen3]

your fine the speedo is not off.

Tire size calculator

[dongalonga]

Wow the first thread I got stickied sweeeet