yes that's correct, the bypass valve is vital.....my friend had a 95 teg and he didn't have a bypass valve. My friend left his car out in the crappy parking lot and when he came back the car he found water up to his floorboards....He was struck with a hefty bill for repairs..i think he had to pay like 2 - 3k on repair, i am not too sure, but hey he had to pay a good amount!!! but definately get the bypass valve, good point StriderGS