Early E38 Fan Help!

Hi! After installing a turbo on a 07 gen iv, my egt's overpower my cooling system above 60 mph. I've set every parameter in the fans system and it works great below 60, Temps below 210. But the second I go over 60mph it kicks the fans off, forcing my ect's to 226, then will reactivate. Back to 225, turns them back off. I cannot find any parameter regarding vehicle speed vs. Fan state.
I thought it was my cooling systems inability to keep up, but after upgrading to a larger 2 row radiator and a pusher fan behind the intercooler and in front of the condenser, still no luck.
Only found out while logging the fans turn off as soon as I hit 60. I've looked everywhere and can't find anything regarding this subject.
Turbo has a blanket.
Downpipe is heat wrapped.
Manifolds are not heat wrapped. Didn't think I'd have a need to.
Theoretically, regardless of how much heat wrap i have on the exhaust, ill still run into the 60mph disable problem. Thanks in advance!