Torque PIDs...Take 2

[Larrylu]

That's with spaces added to avoid the emoticon:

( [ 46 ] * 1.8 ) + 32

[ecoboostsho]

Good catch!  I am going to claim too many adult beverages.  It's definitely +32. Glad it worked and I updated my posts.

[Larrylu]

Few days of driving with the heat soak gauge and so far I'm liking it quite a bit. Still getting used to it but readings on the open road with ambient temps in the high 80's my soak reading was between 30 and 35 degrees. With some stop and go mixed in the soak reading rose about 10 degrees to 40 or 45 degrees. City driving went up to 50-55 degrees and the max reading do far was sitting in the garage idling went to 65 to 70 degrees. This is with the stock airbox and a K&N drop in filter and a 170 degree stat. Coolant temps ran from 178 to 185 degrees.

[ecoboostsho]

Thanks Larry! I have the exact same setup (stock box / k&n / 170) and see exactly the same results. I may put my airaid back on and see if I get different results...

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[Larrylu]

That would be interesting to see. I can't do that experiment anymore as I sold my Airaid some time ago. I really think as I get used to it, the new soak (for want of a better name) gauge will take the place of most of the other air temp gauges on my primary screen.

[ecoboostsho]

Just keeping the topic alive!  Granted these probably get less interesting since we have the "big ones" figured out.

Catalyst Temp (Already in Torque but Millinium mentioned it might be different so I thought I would check)
PID:  22F43C
Equation: ((((256*A)+B)/10)-40)*1.8+32
Units: Deg. F

AWD Status (1=on/0=off)
PID: 22191C
Equation: A/32768

DTC Count (Note this includes DTC's that don't light the MIL lamp)
PID:22D137
Equation: A

Knock Sensor 1 (# jumping rapidly around...not sure if this is knock counts or what?)
PID: 220403
Equation: A

Knock Sensor 2
PID: 220404
Equation: A

Desired Boost Pressure  (Still working on the formula...not quite right yet.)
PID: 220466
Equation: A/128*.145
Units: PSI

Injector Fault (Note this is "bit encoded" so it will need interpretation...) May have to create a separate gauge for each injector...
PID: 220394
Equation: {Still working on it}  It returns 00000000 which I believe represents up to 8 cylinders (we obviously only have six) so a 00000001 means cylinder 1.  00000010 means 2 etc...?

Variable Camshaft Actual advance (there are actually two of these - one for each cam.  This is #1)
PID: 220318
Equation: Signed(A)/16  (Not verified yet)

RPM (Already in Torque but this is the Ford PID which may respond faster and eliminate lag?)
PID: 22F40C
Equation: A/4
Units: RPM

Turbo "overboost" condition
PID: 22070
Equation...not sure yet.  "No Fault" returns 00000000 so may be bit encoded?

I will get these on the main page eventually...

[ShoBoat]

Wow fantastic work. I know that our cars do not have a mass airflow sensor. But I wonder if there is a PID for airflow? Or a way to calculate it off other PIDs?

[ecoboostsho]

Well I did find a Trim PID that calculated air flow in pounds per minute but I'm sure this is a calculated average of some kind and not instantaneous.  If you knew a bunch of variables like volumetric efficiency (which varies), pressure drop, and some others I don't pretend to know I'm sure you could calculate it as I'm guessing that is what the car is doing...I bet you'd like that for your intake testing...it would be awesome to know that!

[ShoBoat]

Exactly! I'll do some digging of my own and see what we can find


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[ecoboostsho]

http://www.lightner.net/obd2guru/IMAP_AFcalc.html

This would do it.  Even if you just picked a number for the volumetric efficiency we could calculate all this on the fly in Torque and then you could pick up the delta's.  In other words it wouldn't be totally accurate with the VE but the difference between two intakes would show up.

[Larrylu]

I would think this might be a good benchmark to keep tabs on intake valve carbon buildup since VE suffers.

[ecoboostsho]

I would think this might be a good benchmark to keep tabs on intake valve carbon buildup since VE suffers.

I don't know how much it would vary but that is a really great idea!  You could baseline it and then have say the BG service done and see if it changed much.

[Larrylu]

Or.....establish a baseline from a new and un compromised system, then slowly watch the VE drop. At some benchmark, say 5% loss, time for cleaning.  Have to get an idea of a correlation between % VE drop and % HP drop.

[ShoBoat]

It would also be a good indicator of when to clean your air filter.


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[millinnium]

my way of keeping the thread alive..