When ive finished doing stuff il post some tech stuff ive found v.interesting, but hers summat for you.

IF dumpvalves help with reliability of turbos, why was they NEVER (IIRC) used on Turbo F1 and Indy Cars? These cars ran upto 4bar of boost!

LeMans 24hr cars, seen one with a DV fitted? I havent.

Some people use the line of "well its a race car, they rebuild them after every race" to reason why most turbo race cars have no DV. Thats bollocks, if it REALLY snaps shafts and bends wheels thats not really a wear thing, that just happens, and besides, hours and hours of flat out racing at huge boost, 1000s of times on and off the throttle from full boost to full vac, its the equivalent of absolutley fuckloads of road use, so WHY is it of any use to us, but not to road cars?