DPF delete. solenoid going crazy

chemoman wrote:
Yes, a vacuum pump sounds more correct. I will check for leaks in the morning. Hopefully I just knocked one loose doing my mods.

Hope that's it too. If you don't find one loose, the way I found the leak on mine was by capping off vacuum lines one at a time. In front of the degas bottle there is a T fitting where three of the vacuum lines come together. One is from the pump, one goes to the front hub solenoid, and the third one goes to the vacuum reservoir. I was a little baffled to find that the leak was in the line that disappeared under the degas bottle/battery tray. After I drained the cooling system and pulled it out, I found the vacuum reservoir under the battery tray.

I'm adding you to my buddy list as I'd like to hear how that tuner works out for you. I just ran across that brand a few weeks ago myself and was wondering if they were any good. Did someone recommend them to you?

:):)