[Biturbos4] turbo

[Trask, Duncan]

Hey Guys,
 I have a 2001.5 s4 with stage 2 upgrades every once and a while my car
will loose power in the turbos they only boost about 3-5 pounds when it
usually gets about 15 it holds steady at 5 pounds and then my check
engine turns on and I get a solid code that bounces around O2 sensors
non of them are broken but the system recognizes its to rich im guessing
its because of the lack of air does the lack of boost from one of the
turbos mean its about to blow or what? Usually when they go its really
loud but mine sound perfect. 

Thanks guys!