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gm 3 bar map sensor?

Old 10-27-2003, 11:36 PM
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Default gm 3 bar map sensor?

what cars came with this sensor? i have been told a few different ones. i have the map froma 87 buick grand national. is that the right one? thanks Brian
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Old 10-28-2003, 12:51 AM
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Default Re:gm 3 bar map sensor?

Originally Posted by ProzacOverdose
3 Bar: GM #16040749

2 bar depends on which model it came out of...
16009886
213-183
16254539
213-361
SU129
i hope this helps..
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Old 10-28-2003, 01:36 AM
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Default Re:gm 3 bar map sensor?

Im almost a 100% that GN's are 2bar stock.

Typhoons/Syclones are 3bars as well as the 86? Turbo T/A
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Old 10-29-2003, 11:38 AM
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Default Re:gm 3 bar map sensor?

Turbo T/A was 3 bar.

Turdbo Sunturds and the Sy/Ty stuffs are 2 bar.

I really don't know what the GNs were... from lack of mention when discussing MAP sensors, I'd almost imply they were MAF? Someone spank me if I'm wrong.
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Old 10-30-2003, 10:59 AM
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Default Re:gm 3 bar map sensor?

gn is MAF system all 3.8 turbo cars were.

sy/ty turbo sunbird are 2 bar
3.1L v6 turbo grand prix is also a 2bar.

chrysler turbos were a bizzare like 2.25 bar its wierd.
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Old 10-30-2003, 01:30 PM
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Default Re:gm 3 bar map sensor?

happen to have graphs?
2.25 bar absolute sounds like just about the perfect resolution for me...
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Old 10-31-2003, 01:20 PM
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Default Re:gm 3 bar map sensor?

no graphs but ill see if i can dig up the chrysler tranfer function. its so close to the gm 2 bar that i use it to buy a bit of extra overhead.
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Old 10-31-2003, 05:15 PM
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Default Re:gm 3 bar map sensor?

I've got voltage vs. load graphs for the GM 2BAR and 3BAR MAP sensors...I'll mail 'em to ya Dave, and you can put them up on PGMFI.

Mike
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