E99 PID's
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More Turbo
Joined: Mar 2003
Posts: 578
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From: Green Bay Wi
E99 PID's
Do any of the pid's change for E99? I see the same PID number for multiple uses, you cant input 2 numbers to the same pid right? For example I see EBP and EGP on the same PID number.
Tuned
Joined: Oct 2011
Posts: 282
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Most are the same for the E99 and the only one I have that is different is the Transmission Temp.
A - Transmission Fluid Temperature TFT 221674 ((A*256)+B)/8 0 250 °F Auto
A - Transmission Fluid Temperature (E99) TFT 2211BD (((A*256)+B)*-0.0036)+212.98 0 250 °F C410F1
Here is an example of two different gauges but they use the same PID.
A - Exhaust Gauge Pressure EBPG 221445 (((A*256)+B)*0.03625)-[221442] 0 40 PSI Auto
A - Exhaust Gauge Pressure (TPD) TPD 221445 (((A*256)+B)*0.03625)-[221440] 0 40 PSI Auto
Hotshot
Joined: Jan 2011
Posts: 18,849
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From: Puget Sound
The numbers are the memory address to locate the PID information. It is crucial to get the memory address and the PID name exact, with no typos - or it can confuse the PCM and stall the truck. Once you have the correct data source, then it's a matter of what you want that gauge to feed you. Do you want Manifold Absolute Pressure or Manifold Gauge Pressure (Boost)? Do you want Exhaust Back Pressure (absolute), Exhaust Gauge Pressure (boost drive pressure), or Turbo Pressure Delta (difference between boost drive pressure and actual boost? Reading the same memory location and PID over and over for different gauges uses up a lot of screen real estate and PCM read time - so choose wisely. Getting MAP and boost is redundant. Getting EBP, EGP, and TPD is redundant. I pick my one favorite gauge for each sensor, then move on. For air in/out, I use Boost and TDP... very telling.
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