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3bar os hpt question for 04 tahoe

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Old Apr 10, 2012 | 11:09 AM
  #11  
CalEditor@PCMCalibrators's Avatar
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Sorry I was thinking about a different OS. I had to alter a VDF once a while back

This is from a 2004 1 meg PCM
2 bar
3bar os hpt question for 04 tahoe-john-2-bar.jpg

3 bar
3bar os hpt question for 04 tahoe-john-3-bar.jpg

This is from a 1999
3bar os hpt question for 04 tahoe-main-ve-2bar.jpg

The 3 bar
3bar os hpt question for 04 tahoe-main-ve-3bar.jpg
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Old Apr 10, 2012 | 11:09 AM
  #12  
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Originally Posted by BigKID
I asked the same question on HPT when I was considering a 2 or 3 bar OS. The resolution in the VE table stays the same but you loose resolution from the sensor itself. With a 3bar sensor, you are trying to cram an extra 105kpa into the same 0-5V signal.

but it is a must if you want more than 14.7psi. i wanted to do 2.5 bar but my computer won't run it i guess.
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Old Apr 10, 2012 | 11:13 AM
  #13  
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Originally Posted by CalEditor@PCMCalibrators
Sorry I was thinking about a different OS. I had to alter a VDF once a while back

This is from a 2004 1 meg PCM
2 bar
Attachment 61680

3 bar
Attachment 61681

This is from a 1999
Attachment 61682

The 3 bar
Attachment 61683
well damn, it doesn't grow. well i guess at least out of boost range its still 10kpa. so part throttle should still be ok. is there any os's i can over ride to my pcm that would work to get a better resolution?
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Old Apr 10, 2012 | 11:36 AM
  #14  
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Originally Posted by TURBHOE
well damn, it doesn't grow. well i guess at least out of boost range its still 10kpa. so part throttle should still be ok. is there any os's i can over ride to my pcm that would work to get a better resolution?
I had one that grew, but I am not sure what it fit now. I guess I could have had an issue with the tune and it didn't grow. It was a few years back
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Old Apr 10, 2012 | 03:59 PM
  #15  
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COS3 on efilive im pretty sure has a huge ve table. Its been forever since ive messed with tuning, and I realize your hpt.
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