okay since the cold weather has been here since october my boost gauge has been giving me mixed readings. used to read 9psi full boost when it was warm, and even when it was chilly it would read properly. now with the full onset of winter, my gauge is acting crazy. however, sometimes it feels like my turbo isn't even boosting.

when i shift, vacuum should be 20 or 22, but now the needle slams 30 mmHg then when i HEAR the turbo spooling it will reach around 0. tonight, the needle crept into the psi scale at 3psi. i don't know what the hell is going on.

 

Could be loose vacuum tubing or it's kinked..............basically look for anything restricted

 

you need new muffler bearings and some turbo belts.

edit: on a more serious note...can you get ahold of a different boost or vaccuum gauge and test it independently...maybe your boost gauge is fawked up....also I know your turbo was sounding a little less than full on when we were hangin out...could you have finally fried it? Also doesnt your ECU crank down the boost when it is super cold out..could it crank it down more and more as it gets colder?

 

the T-VSV actuator can't limit the boost down more than 7psi. when the car shuts off the gauge will sit at 10 mmHg vacuum.

 

I say have it checked by teh pros.

Do you ever see smoke in the exhaust?

 

time for a leak test.

 

i figured it out. i'm going to push it over a cliff.

 

Still wanna race? My engine's running perfect. hfawk:

 

Don't despair young brotha. I'll (try to) see what I can find out about funny boost readings and get back at ya.

 

I'd be happy to :wiggle: