MUWAHWHAHAHHAHA!!!!! Evo bucking issue going down in flames!!!!
You Evo folks, I've pretty much killed that bucking once and for all. I'll have to make a slight retraction to this topic as the Synapse Engineering Syncronic diverter valve is a necessary component in eliminating this problem, but requires a little bit of extra stuff and some tuning to work out the kinks. Little system I developed in conjunction with the valve makes the whole thing work.
The Evo is going on the dyno tomorrow to plot some AFR and torque curves against previous dyno pulls and if my calculations are correct it'll be running just a tad rich from about 4500 to redline right now. Sure doesn't feel like it's rich the way the fucker pulls like a freight train @ 1.70 bar boost.
After the months of R&D, testing, prototyping, I finally found the root cause and worked a solution to get around it without people having to spend thousands axing it from the start.
Tada!
Regards