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ACCLR8N
October 5th, 2012, 02:18 AM
2005 GTO LS2 I'm creating PID list for the late WeathermanShawn's Calc.VET. I'm sure I saw a simplified approximation for DAT that was something like IAT*0.85 + ECT*0.15. I can't find it again. The other method references the MAF B4901 on 98 LS1. The E40 I think is the B1098. I'd like to have the simpler version in my back pocket if somebody can steer me back to it or confirm the formula.
joecar
October 5th, 2012, 03:59 AM
Can you post an E40 file here...

If what you said is the case, the change the calc pid name from CALC.B4901 to CALC.B1098, edit the looked up values to match the table, and proceed with tuning.

Edit: the air temp blending table in the E40 is B0115 (and not B1098)... so you would rename the calc pid to CALC.B0115.
ACCLR8N
October 5th, 2012, 04:19 AM
Sounds simple enough. Thanks for your help.
joecar
October 5th, 2012, 04:28 AM
When you change the name of the calc pid, you also have to change it where it is referenced in CLC-00-273.
ACCLR8N
October 5th, 2012, 04:49 AM
Understood.
ACCLR8N
October 5th, 2012, 06:08 AM
I don't think I want to replace 0,0.6000 with 1000,0.7734. Back to looking for the simplified approximation formula.
joecar
October 5th, 2012, 08:58 AM
Actually, the air temp blend table is B0115 and not B1098, sorry I mis-read the table id.

see the edit to post #2 above... and take note of post #4.
joecar
October 5th, 2012, 09:02 AM
In you table B0115, the very last cell is not right (I would flatten it out).
ACCLR8N
October 5th, 2012, 02:56 PM
Actually, the air temp blend table is B0115 and not B1098, sorry I mis-read the table id.

see the edit to post #2 above... and take note of post #4.

That was my bad guess, not you. I didn't create a CALC.B0115, but rolled the calculation into my CALC.DYNAIRTMP. Does that make a difference since I didn't need it anywhere else? Fixed the last data point in my tune for B0115. I now how have a fully validated and tested PID list. On to the next step...

Thanks for an impressively quick and helpful response to my first post.
joecar
October 5th, 2012, 03:18 PM
Yes, you can certainly can roll it in without renaming CALC.B4901 (just make a mental note of what it really is).

Ah, first post... welcome to the forum :cheers:
joecar
October 5th, 2012, 03:50 PM
Your calc_pids.txt file is based on an older version of this file (which did not make effective use of units)...

so I ported your B0115 calc pid into a newer version of thecalc_pids.txt file, see attached

( the newer file arranges the pid order more sensibly, and makes use of the .unit conversions )
ACCLR8N
October 6th, 2012, 04:02 PM
Swapped it out. Thanks.