I just blew up the factory turbo on my LBZ and I am replacing it with a GT4094 VVT and diamond eye downpipe this weekend. I have heard that the 4094 requires the vanes to be closed a bit more to spool due to the increased size of the exhaust housing. I have some ideas on how to go after this by closing the vanes a bit, but I have never done any VVT tuning before.
Does anyone have any advice or tunes that they would be willing to share?
Thanks