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Old Dec 25, 2006 | 08:51 PM
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HP VCM Scanner program questions

Whats the correct PID for throttle position and whats the one to log boost

for boost i tried BARO sensor and Barometric Pressure SAE
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Old Dec 25, 2006 | 09:14 PM
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I don't know the answer to your question, but I know Baro and Baro SAE are not correct. The Baro sensor is just that, an ambient atmosphere barometric sensor that makes corrections to AFR based on Baro SAE.

Look for something like MAP or BAR.
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Old Dec 25, 2006 | 09:33 PM
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well i have map logging right now and tried setting up a user defined PID

Last edited by Rodimus_Prime; Dec 25, 2006 at 10:07 PM.
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Old Dec 25, 2006 | 10:07 PM
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That should be giving you your boost stuff. TPS is throttle position switch.
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Old Dec 25, 2006 | 10:17 PM
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Throttle is ETC%

Boost you have to make a custom PID if you want it to read in lbs.
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Old Dec 25, 2006 | 11:09 PM
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got it finally got it to work and it matches the map values wahoo! its quite a work of art
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Old Dec 26, 2006 | 11:46 AM
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Desired ETC % is the new TPS PID basically for ETC vehicle.

As for reading boost yeah just log map then make a custom PID of map in psi-14.5=boost.
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Old Dec 26, 2006 | 02:49 PM
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Thats not entirly accurate. Depending on alititude, the atmosphereic pressure may be more or less than 14.5. I'm at 1208 ft altitude and atmosphereic pressure is 13.96 psi.
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Old Dec 26, 2006 | 04:59 PM
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I seem to have the Boost reading now by creating a custom PID with the map in PSI -14.7 and the psi matches is there some way I can get this more accurate?

I saw one of the PIDs was monitoring barometric pressure and it was like 14.18 or something so to get a more accurate reading i could do like say [PID.(map).IMP]-[whatever the right one for barometric pressure is] for a more correct reading
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Old Dec 26, 2006 | 05:08 PM
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Make the PID, using the MAP sensor and subtract the baro reading.
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Old Dec 26, 2006 | 06:26 PM
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which baro reading BARO sensor or Barometric Pressure SAE
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Old Dec 26, 2006 | 07:43 PM
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Are the two sensors giving different readings?
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Old Dec 26, 2006 | 07:53 PM
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boost is [SENS.30.IMP]-14.7

ETC is ETC POSITION
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Old Dec 27, 2006 | 01:46 AM
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Right now im using [PID.11.IMP]-14.7 is there a difference?
Looks like I got the TPS right now, is it normal that it almost never says 0 and usually says like 11% at idle
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Old Dec 27, 2006 | 08:29 AM
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yes, because you don't have an iac, the computer controls the throttle blade to maintain idle.
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Old Dec 27, 2006 | 08:30 AM
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BTW those two calcs are basically the same, HPT usually recommends using the SEN though rather then the PID
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Old Dec 27, 2006 | 08:42 AM
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I can forsee a lot of questions on my part when I finally get HPTuners.... I hope this stuff is easier than it appears when I finally get it.
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Old Dec 27, 2006 | 09:13 AM
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Originally Posted by 2K5SS/SC?
I can forsee a lot of questions on my part when I finally get HPTuners.... I hope this stuff is easier than it appears when I finally get it.
Thats when the real questions start
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Old Dec 27, 2006 | 10:54 AM
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Originally Posted by Doc
Thats when the real questions start
****!
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Old Dec 27, 2006 | 12:53 PM
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i tried using the sensor reading first but it didnt seem to work
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Old Dec 27, 2006 | 02:57 PM
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Originally Posted by 2K5SS/SC?
****!
Na dude, once you get around the learning curve you start unlocking the power like crazy! Took me about a week to get it all figured out (hours of tuning a day) once I did my car was scary fast and getting scarier everytime I tuned it!!!
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Old Dec 27, 2006 | 04:03 PM
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Originally Posted by Blown 4-banger
Na dude, once you get around the learning curve you start unlocking the power like crazy! Took me about a week to get it all figured out (hours of tuning a day) once I did my car was scary fast and getting scarier everytime I tuned it!!!
Cool. I'm sure I'll get the hang of it.

Sorry for interrupting the thread by the way. What is a PID? This stuff is starting to confuse me.
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Old Dec 27, 2006 | 07:31 PM
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... you know now that I think of it, I don't know what PID stands for! Oh well
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Old Dec 27, 2006 | 07:59 PM
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I honestly don't think there is a clear-cut answer to "what is a PID" where P, I, and D = something that makes sense. I just know it as a parameter to be listed in the table (a location for data to be seen).
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Old Dec 27, 2006 | 09:58 PM
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proportional-integral-derivative=PID not many people know it but thats ok.
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