this is great info thanks! btw, could some of this be related to a bad TPS? it threw a "high" code today and is running rich. pulled the TPS and will replace anyway.

that's what i thought. ok, so i dump the oil and go back to 10W30. any ideas on the lag? with old engine boost gauge would be at 12 o'clock when idling and maintaining constant speed until i pushed accel and then it would move into white.

replacement engine needle is at the center of the black ...

Recently I had to replace my engine because the previous one overheated, blew the head gasket and in turn fried the engine. I estimate it had about 190K as odometer stopped about 1 yr ago. The replacement engine has 85K miles and seems to be running fine. However, I now have turbo lag -- something I ...