I'm boosting about five pounds less than what I used to. I just put in a new 710N about six months ago. With a K04, would you think my lack of boost is due to a worn valve, or perhaps something else? I've checked the hoses and they look fine.

Either way, it's cheap enough to replace periodically to rule it out.

is installing it backwards. If it is installed backwards the diaphram can get soft and the boost pressure at the bottom of the valve will push it open enough to leak out air.

...assuming proper installation?

for over a year without any problems. I still use a 110 valve as a back up to the EVO valve I now have in my car.

Yeah, I know it's a lot for a valve, but if the OEM valves keep lasting only this long, it'll be worth my time in the long run. Thanks again for the input, 2.0.