Going in limp mode on boost in 4th,5th

[Majorcina]

I have strange problem with my car,it all started before a grand car show when a friend sprayed my engine bay with product for dash "glow",something like this

After that car start going in limp mode after 4000rpm in 4th and 5th(didnt test in 6th)
The first three gears she dont go in limp mode but i am not sure is it boosting like it shud
Also my boost showing on dash is pointing on idle 0.7 and 0.8 and when car is in boost it doesnt go over 1 bar(after PRJ map atmospheric boost is eliminated,instead of showing 1 bar atmopsheric he shown snow 0.1 so you guys know what it is about)
I just went for a test drive and pulled blink code after the limp mode(no check engine light flashed when car go in limp) and i got 2222 blink code,which is G71
Any clue what could be wrong?I sopose that the sprey made this since evrything was fine before that
P.S. I wasnt near the car when he did that,becose i wouldnt let him do that...

[Monkeymagic]

Boost leak

[UrS4boy]

G71 Manifold Absolutue Pressure sender info

It might be pure coincidence or it might be real (somehow the spare resulted in a bad connection (somehow )). In any event here is a hyperlink to some G71 Manifold Absolutue Pressure sender info to read:

http://forums.quattroworld.com/s4s6/msgs/20417.phtml

[UrS4boy]

AAN Boost Testing Options

In any event, as suggested it could be a boost leak, in which case this hyperlink might be useful to read:

AAN Boost Testing Options

http://www.s2forum.com/forum/showthread.php?t=63987&highlight=AAN+boost+leak+testing

[Majorcina]

I will check bouth of them