So, these cars are goofy. Some, the map is never used. Some use it only when the maf fails. Some use it to check the maf. Some use it for parts of the fueling calculation. There are people that can read the code and tell you which you have, unfortunately I'm not smart enough to do that.
Some cars have the required tables to switch from a 1 bar map to a 2 bar map. Most don't though. On the grand prix's it's easy, because we can just swap to the gtp pcm. But with impala's and monte's, not all years had the supercharged engine. I ran into this problem with a local that top swapped a 2000 monte carlo. We couldnt write a file from an 04 car because the bcm wouldn't function properly.
Your best bet is to run your l36 map with all stock map tables. The map table only reads to about 4psi anyways, so it doenst help anything to run the 2 bar map.
