odd thing going on

[stevesparts]

Well been having a odd thing going on with my truck.(07 w900 with a 870) as i was driving along every thing was going great then i hit a stop light then all the sudden the check eng. light comes on and the boost kicks up.but then as i as i'm going it turns off. and all is well.....untill i hit another stop and it does it again.. then the next light its fine..:huh:
Any suggestions as i don't want to take it to a so called "tec" who will give me that look and say i can't find any codes, so there's nothin wrong with it...and i don't want to go to jail for assault :@
for the smartass look they give ya like you don't know sh!t and your seeing the same.
Looking to dig into this as soon as it warms up a bit as it was 9 degs out this morning.(i need to build a garage:-/)