So I picked up the MAP tube from the dealer last Wed and installed. No Change. Still trowing code p0452 and p0453.
I did notice that with a full tank I get code p0453, voltage to high. And with a half tank or less I get p0452, voltage to low. So I picked up a FTP sensor this morning and installed it. It wasn't to bad. I just took off the tank straps and lowered the tank enough to see the sending unit. I was able to remove the old sensor and install the new one. Took 10 minutes max. I am clearing the codes right now and will test drive shortly.
I did notice that the sensors had a number painted on them from the manufacturer. This number was different on the old sensor and the new.
Maybe the sending unit had the incorrect sensor installed when it was manufactered? They are both BWD sensors.
I'll update with the results.