We are adding a turbo to an LE5 powered buggy. Siemens Deka 60lb injectors and 2 bar MAP. The car was previously tuned MAFless and operated for a couple years without issue. I read the tune and I am confused by the pressure scale in B4001. Instead of Vac MAP, it is Delta MAP 128 to 640. I am tempted to just scale it, but I would like to understand the units.