Thread: not shifting at boost

Dirty IAC/MAf will cause skewed shifts.

Sounds like you got a vacuum leak to me if you tripped a a P0171.

Especially if you just did the LIM gaskets, did you replace all the rubber "T" fittings?

Check the MAP sensor on the back of the blower...there should be a port where a "L" rubber fitting goes into the bottom of the MAP that lots of people tend to miss.

Whats the IAC, and I just got a new MAF, if you are talking about all the T fittings for the vac lines no i did not change all of those, and the MAP sensor is new too and i have my vac line on that as well.