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Haltech My E8 will not allow me to set 'Boost Cut' above 27 psi.

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Old Oct 13, 2013 | 03:53 PM
  #1  
jetlude's Avatar
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From: Paradise
My E8 will not allow me to set 'Boost Cut' above 27 psi.

I actually want to set BC to 29 psi but it will go back to 27psi when I hit apply. Is this normal?
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Old Oct 13, 2013 | 07:48 PM
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From: Perth, WA, OZ
possibly cause you only have a 3 bar map sensor?, which is maxed there at 29..
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Old Oct 16, 2013 | 06:49 PM
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Ok, makes sense
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Old Oct 19, 2013 | 01:26 AM
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From: Smiths Falls.(near Ottawa!.Mapquest IT!)
It mentions here that one Bar is 14.1..or 14.5.
so 3 times that is 43 something.

table LINK:
Bar to PSI, inHg, mH2O and ftH2O Conversion Table

So wouldn't he only have a 2 bar Map?.That would make more sense,wouldn't it?
If he hit 28 he would be right at the Edge of a 2 bar rating...I dunno,just thinking out loud.

You Tuner guys would know more so I'm just going on assumption here..no offense to anyone.

Last edited by misterstyx69; Oct 19, 2013 at 01:28 AM.
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Old Oct 19, 2013 | 02:35 AM
  #5  
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From: Perth, WA, OZ
3 bar map sensor..
2 bar of boost,, 1 bar of vaccum.. -15 psi to 30 psi ,, give take a few for the voltage the offset

the last scale on an auto generated 3 bar map scale is 29 psi
.. which will be 4.5 + V on the '5V ' map sensor, and thus nowhere for it left to go further
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Old Oct 21, 2013 | 12:06 AM
  #6  
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From: Smiths Falls.(near Ottawa!.Mapquest IT!)
You da Man Bumpstart!..
I didn't wanna yak off with stuff I don't know anything about so I just stated what I saw and I learn from the masters!
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