[C. Ludwig]

The driveability won't suffer at all either way. As I've said before with the 6PI hardware removed you'll make more top end than with a working 6PI system. I feel the trade off is worth it. The changes you've made to the exhaust will more than make up for the elimination of the 6PI and VDI at low revs. IMO the best system is to remove the 6PI all together as you have and leave the VDI working. But the VDI is only worth a few hp at the lowest revs. Losing it isn't something I would lose sleep over.

It will be easy enough, once the car is on the dyno, to run the car with the VDI in both locations to see exactly what the differences are. If it turns out to be a gain you feel is necessary you can always make the system workable after the fact.