Finally got this thing straightened out and running pretty good up to 15# of boost. The workings of this damn E38 have me baffled! Had a MAF only tune that was perfect. Got the VVE tune perfect. Put them together, and off by 20% rich... makes no sense to me at all. In the end, I had to work the MAF further to mesh it with the VVE. Then we put it in CL with STFTs only. STFTs are very low and everything looks great. Don't really know how I got rid of the crazy lean spikes we had - they just didn't come back once we got each tune straight separately and put them together... LS1Bs are so much easier and can be fine tuned so much better with the ability to command other than PE... But, it turned out pretty good in the end. One day, after the meth kit, we need to put it on the dyno and see what it'll make.