I have heard of couple of them failing on this board. I'm not a electronic guru. But the only way I think they can go bad is from voltage surges or shorts. The controller is supposly a solid state design like the ecu .
Arizona'a most powerful 600HP 15 second Z More powerful than a stock TT , slower than an NA
Dynoed 515 rwhp and 420 ft.lbs @ 16psi 89 degrees. 533 rwhp and 450 ft. lbs @19 psi and slipping clutch and heat soaked motor , 85 degrees.