I have a Tial external waastegate. When the car is sitting at idle or anytime for that matter, there is a exhaust leak. It comes from the wastegate exhaust outlet. I know it's coming from there because I put a towel in front of it and it quites.

Isn't the wastegate supposed to remain totally closed until the proper vaccum is reached? There are 2 hole on the wastegate. One on the very top which I left open and the other on the side. The one on the side has a vaccum line running to the intake manifold.

I would simply like to know why the wastegate valve is opening and closing at when the car is turned on.

ttt

uhm in that case it does sound like your wg is leaking. how about taking it off and seeing if you can oush it open?

aslo try a search, i know people will say it a lot but this topic has beeen discussed before.

bump

how do you have it hooked up? if its got a vac line running directly to it, then it will be sucked open...

I have a vaccum line running from the wastegate directly to the intake manifold.

that might be enough to pull the gate open....is there a place to hook the line on the turbo? if not you can get a MBC and route it -WG->BC->manifold