AEM had a big recall on those bypass valves a while back - I think the foam on the inside was coming apart and wrecking engines. The last I heard is they fixed that problem, but that kind of defeats the purpose of having a safety device in there the first place. I think the reason people have a problem with CAIs is they don't properly reinstall the fender well liners, so the water has a clear shot of douching the filter. I live in the rainy northwest and haven't had any problem with my CAI.