Wastegate issues

I posted earlier in "1997 Gs-T Help" about the problem I was having so you may have to refer back to that. I know you hate reading long question but please bear with me...........Okay, after trying numerous things to fix my rich fuel mixture/boosting issue I got fed up with it and took it to the Mitsubishi dealer to have it diagnosed. After two visits and close to 3 hours of diagnosing they finally told me that it was a bad wastegate. They said that the wastegate would only open manually and wouldn't open correctly on its own.He told that fixing that would fix my problems. So they offered to order me a new wastegate, the only catch was that I had to purchase the stock turbo with it for the low price of $1,550.00. Not being an idiot I turned down the offer and got one off one of my friend's eclipse. I was extremely relieved that I finally found my problem and I though I could finally fix it............I was wrong............ I replace the wastegate with the other one only to find out that it had no effect on the car, as if I never touched it. I was furious. After a while I got to looking at and notice the vacuum line teeing from the wastegate that runs from the turbo to the intake. Would it be possible that I'm not getting pressure from those lines for the wastegate to work? If so that is probably the reason why removing the bov recirculator has such an effect on it, because it somewhat changes the pressure running to the intake end of the vacuum line.

First off, for the rich fuel, check the vacume lines going from your intake manifold to the Fuel Pressure Regulator. Make sure there not leaking and that they are hooked up right.

As for your Boost issue, if your boost pressure is high, fuel pressure will increase with it, and your car will dump more fuel in the motor. If you want to make sure your waste gate is working properly, run the vacume line coming off of the waste gate to some part of the IC piping or the manifold (if your not sure how to do this search for a turbo diagram).

I'm guessing you don't have a boost gauge? Sounds unlikely that your wastegate is acting up. If you had a boost gauge you could tell what kinda pressure your running to see if the wastegate is actually working as its supposed to.