15psi on stock MAP sensor?

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Old Apr 2, 2008 | 05:50 PM
  #1  
hondamn1320's Avatar
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From: brownsville, tx, united states
Default 15psi on stock MAP sensor?

how is this possible? i thought the stock sensor was only capable of reading 11psi. i was boosting 7psi(wastegate spring) then i put a little "T" in the line and it jumped up to 15psi in 3rd and 4th gear.

could there be a leak somewhere that's allowing this to happen? any help is appreciated.
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Old Apr 2, 2008 | 05:55 PM
  #2  
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From: reading, pa, usa
Default Re: 15psi on stock MAP sensor? (hondamn1320)

u can boost all u want on stock map. but the tune tables will stop at 10 or 11 for stock map , after 11 or so psi it stops putting out voltage so ur tune will not go any higher than the 11 psi column , so hopefully that column is set rich cause too much past that and stuff will break.
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Old Apr 2, 2008 | 06:22 PM
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Default Re: 15psi on stock MAP sensor? (hondamn1320)

Upgrade the sensor to a omnipower/hondata sensor

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Old Apr 2, 2008 | 08:33 PM
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Default Re: 15psi on stock MAP sensor? (mtber)

yea, the map sensor doesnt control what kind of boost you can make (thats the wastegate's job)
it only limits your tuning abilities
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Old Apr 2, 2008 | 08:35 PM
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Default

The map sensor doesn't limit the amount of boost your setup can produce. You're experiencing boost creep/spiking. What manifold, turbo and wastegate do you have and does this occur often??
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Old Apr 3, 2008 | 04:50 AM
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Default Re: (Schister66)

it's never happened before. it used to hold 7 psi all the way through. i thought the MAP would cut me off after i hit 11psi. i have a 3bar map waiting to be installed.
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Old Apr 3, 2008 | 05:40 AM
  #7  
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Default

you can run over what it reads and work with the 11psi column for tuning higher levels it won't be as smooth of a transition
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Old Apr 3, 2008 | 05:54 AM
  #8  
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Default Re: (hondamn1320)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondamn1320 &raquo;</TD></TR><TR><TD CLASS="quote">it's never happened before. it used to hold 7 psi all the way through. i thought the MAP would cut me off after i hit 11psi. i have a 3bar map waiting to be installed. </TD></TR></TABLE>

I'm not sure what EMS you're using, but a lot of them you can set up boost cut at 10psi on a stock map sensor to prevent overboosting. The MAP alone will not cut the car off, but if you set up a boost cut just under the max reading range of the MAP it will.
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