Runs terrible after warmed up crazy tachometer VIDEO

[xxwhiteboyjim22xx]

Do you have a check engine light on. Or have any pending codes set? Maybe one of your sensors need replaceing. idk though just guessing. Deffinitly not your O2 though ur car won't use that at WOT.

[SuperK]

If your disty won't advance farther there's something wrong. sounds like your timing is off on the crank and you're compensating it on the disty. You shouldn't have it all the way advanced especially on the B6

[pauleatstoomuch]

I don't have any CEL codes, and I already replaced most of the sensors. I'm gonna go with what SuperK said. Probably the timing belt issue the fact that I can't advance the disty further. Thanks!