"when my turbo kicks in it looses power at about 5000 rpms, its like its boggin in and out. Could it be the blow off valve"

The closest thing that you have to a turbo is Turbolax you lying motherfucker. What is your problem? Also the closest you have been to a Lexus is when you worked at as a lot attendant and had to wash that mother fucker. Take my advise, and see a shrink you pathological piece of shit.