lately when i'm driven.. oh say, probably for about 5- 10 minutes... if i get on it, my boost will hit about 4 and then almost top out or something of that nature. like its trying to downshift and then it will bump back up...

i did it again after the motor warmed up a little longer and i didnt have the problem.

 

Does the vacuum do some funny stuff when the motor's cold like that?

 

thats what i was thinkin, but ive never noticed anything before...

sometimes when im idling in park, it will surge from 700 to 900 rpms, then back down.

 

I wouldn't really worry about it personally. It can be tuned out if it bugs you though.

The idle can be anywyas.

 

im just waiting to get a free weekend so i can go to where Todd tuned his truck..

 

Not happy with your current tune??

 

no comment.