I firmly disagree...though AEM claims their bypass valve is the greatest thing since sliced bread, in anu number of mags, they've proved that it works poorly at best. The premis behind AEM's intake bypass valve is that the filter is completely submerged, and in most cases, unless you're stupid enough to drive almost up to your headlights in water, then the pressure change won't be enough to activate it. Aside from that, if you're that far up into a puddle, you have other things to worry about other than sucking up water.....

If you 'll notice the test they do on an NSX, the NSX filter is in a fish tank, yet, you'll notice it's all the way in the fish tank, with none of the filter exposed. If you hadn't gathered by now taht AEM's bypass valve works on pressure. It uses an ambient pressure chnage to opent the bypass vavle. Unfortunately if you're sucking up water, it may not be enough, unless the filter is sufficiently submerged.

I've had several friends who have hydro locked their motors on blind faith with that bypass valve, swearing by it, untill it was their cause of ruin.

Dont waste your money, and surely dont rely on it for anything else other than one more gimick.....

Later,
Aj