I was looking for info related to John's (Screaming for Mercy) Ecotec /2.4 SC re-flash swap. I found an big list of part numbers that includes 2 and 3 BAR maps sensors and thought I'd share. the info came from www.chevyavalanchefanclub.com a guy named "Old No.7 Avalanche" gets the credit for all the hard work.

Here ya go boys and girls who like the thought of Superchargers and Turbos, but can't seem to get that MAP #. Thumbs up!
I'll add on as I keep getting the info. #7
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Delphi 2 bar - 12615136 (8.1L is GM PART # 9359409)
Delphi 3.3 bar - 09373269 or 12215049
Delphi 3 bar - 12223861 or 12219935(The GM 3-bar part #12223861 will need a new connector part #15305891)
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1 BAR is for a normally aspirated engine
2 BAR will handle a forced induction up to 14.5 psi of boost
3 BAR will handle a forced induction up to 29.0 psi of boost
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Here is the pin outputs for a 3 bar:
PIN A: ground
PIN B: signal
PIN C: power

For all you WELLS products folks (A.K.A. Autozone Thumbs up!).Here are GM part numbers.#7
1 Bar MAP Sensors 2 Bar MAP Sensors 3 Bar MAP Sensors
SU314 SU318 SU504
SU1077 SU316 SU2348
SU1078 SU129 SU1480
SU1248 SU340
SU1157 SU341
SU208 SU1228
SU315 SU1285
SU321 SU1477
SU322 SU6074
SU339
SU105
SU104
SU127
SU347
SU345
SU342
SU3032
SU3033
SU1093
SU346
SU4021
SU4022
SU5298
SU1176
SU4183
SU4186
SU4187
SU4188
SU4190
SU4197
SU1335
SU4271