I notice at times that my chipped 1.8T will suffer performance loss... feels as if the turbo is really kickin' in that hard, or much at all... anyone know what might cause something like this? Could it be caused by faulty turbo hoses? Thanks for any help!

Yes, I blew out 2 valves when I was running a TAP stage 2 chip. Moving the redline to 7500rpm was not the best idea. One valve was the blow off valve and I am not sure what the other one was called, I know that it was in the same area though.