GM 2 bar:

GM part # 16009886
Wells part # SU-129
standard part # AS-4

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GM 3 bar:

GM part # 16040749


FYI, if you ever have any wierd oddball Q about any EFI component... it's been covered sixteen times already on the DIY-EFI mailing list. Their complete and info-packed mailing list is archived off of www.diy-efi.org. Good shizzle! It's where I just cut/pasted that info from.

 

Hey just curious if with that 2-bar or 3-bar sensors if you can use the AFC still to control fuel curves? I imagine you can, but does this risk getting into CELs again?

 

there's also a 2.5bar sensor manufactured by motorola (MPX4250AP). it's a PCB mount sensor i guess, but it sells for about $20 from digikey et al. i don't know if it can handle the environment of the engine bay, but i'm sure you could put it in an enclosure. this is the sensor that the megasquirt EFI ECU uses. cheap alternative maybe.

most places charge up to $65 for the GM 2 bar sensor. i know autozone online has the wells version for $28.99 (do a search for a 89 pont. sunbird turbo).

hope that's useful info...