i am looking for a 2 bar map sensor for my ls1. looking for a direct plug in but i cab trim the sensor as i see you have to most the time. i have checked other threads on here but get some comflicting results. what GM part # is the sensor that i will need whether map or baro to work with the stock ls1 ecm and efi live

 

I've read that alot of people are using an '05ish cobalt ss sensor

 

right but some say its a map sensor and some say its a baro sensor. thats i why i was looking for the part # for the one i need so there is no issue

 

GM 12580698

just get that one and don't try cutting corners. I tried to get one from AdvancedAuto and it turned out to be wrong. Go to a GM deal and spend the $75, yes it's painful for what it is but trust me it will work once you plug it in.

 

i got a bolt on one from the older style (from a buick grand national) Custom harness here so I just soldered on a pigtail for it.

Jay