Mine has never popped off. I have about 2500 miles on it.
I have not heard anything from Troy since 6/22/12. Correspondence with Steeda began on 6/7/12. My advice at this point is to buy Steeda. K&N has issues with their product, and I'm not sure they're willing to do anything about it at this point.
'12 SE Sport 5Dr |╠╬╝|Sterling Grey Metallic|203a|Moonroof|17" Mach/Paint Whls|K&N Typhoon|FFE RMM|Steeda STB, RSB
'01 ZX3|╠╬╝|Pitch Black|Prem. pkg.|Moonroof|SVT Snorkel|SVT Springs|S2 Dampers|Steeda STS|Magnaflow exh.