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Old May 10, 2010 | 01:35 AM
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what is the difference between a 2 bar map sensor and a 3 bar map sensor? what kind of map sensor do would i have on a 98 camaro ls1
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Old May 10, 2010 | 02:17 AM
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These 2 and 3 bar MAP (manifold air pressure) sensors measure air pressure up to 14.8 psig (2 bar) and 29.7 psig (3 bar). im posting an answer to my own question .thats sad!
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Old May 10, 2010 | 09:04 PM
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the cobalt 2 bar map sensor aperantly has better resolution then the 3 bar gm
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Old May 12, 2010 | 12:52 PM
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Originally Posted by elias_799
the cobalt 2 bar map sensor aperantly has better resolution then the 3 bar gm
could you elaborate on that please?
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Old May 13, 2010 | 07:39 PM
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Originally Posted by juanioz28
what is the difference between a 2 bar map sensor and a 3 bar map sensor? what kind of map sensor do would i have on a 98 camaro ls1
Factory is a 1 bar designed only to read vacuum.

a 2 bar reads 1 bar vacuum and 1 bar boost=14.7 PSI
a 3 bar reads 1 bar vacuum and 2 bars boost 29.4 PSI.

Cobalt sensor is a 2.5 bar. 22.5 PSI.

Cars with 2 bar's are the GTP's, Buick GN's, and Syclones.
Only car ever made with a 3 bar is the 1989 Turbo Trans Am. And it was used just for the in dash boost gauge.

The lower the bar, the higher the resolution.
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Old May 13, 2010 | 08:35 PM
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Originally Posted by Julio
Factory is a 1 bar designed only to read vacuum.

a 2 bar reads 1 bar vacuum and 1 bar boost=14.7 PSI
a 3 bar reads 1 bar vacuum and 2 bars boost 29.4 PSI.

Cobalt sensor is a 2.5 bar. 22.5 PSI.

Cars with 2 bar's are the GTP's, Buick GN's, and Syclones.
Only car ever made with a 3 bar is the 1989 Turbo Trans Am. And it was used just for the in dash boost gauge.

The lower the bar, the higher the resolution.
pretty sure it is a 2 bar

i think the only one that used a 2.5 bar was the cobalt with the blower, not a turbo

Last edited by elias_799; May 13, 2010 at 08:45 PM.
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