If you want to make your life easier you should be running a l67 / l32 2 bar map sensor with a supercharged montie carlo bin file modified for your setup. I did the ssm90 kit from zzp which also trys to run a 1 bar map on a blower setup. I had numerous tuning nightmares and the damn thing had severe drivability issues in the cold. I bought a l32 map sensor because it is plug and play on a l36 harness, Hooked it up to the boost ref port on the lower intake, and then flashed a supercharged grand prix bin file from a 2002 if I remember right. Car immediately had better throttle response and no more drivability issues in the cold. Did the same map sensor / supercharged bin setup on another bonnieville that I helped top swap and it was the same story. At first my buddy went the cheap route and had issues. Switched to a proper setup and it is perfect now. Not to mention you can then read up to 14psi of boost with your scangauge if you have one.
