denny said:I say you got a big ass vaccum leak somewhere, (cruise control, vacum ball caniser).
Denny
ghettosled said:even with a vacuum leak (hose being disconnected) it should still make a few psi. a truck will still make 3-5psi with the hose clams off the TB-IC connection. By brake torquing it with the hood up, you should be able to hear a noticeable hissing sound if the leak is severe enough to cause a no boost issue.
my vote in on the exhaust.
Raist103 said:what happened?
ViciousV6 said:Disconnected downpipe and it seems to have gone away so it looks to be a clogged Cat. We will know 2morrow after the straight pipe get put in but seems to be the problem.
Ralph