I am trying to help a buddy out. He has an 1000hp TT S550 and is having issues with this cam phasers resetting to 0 degrees during WOT runs. He has already replaced the stock cam phasers and replaced them with brand new GT350 ones which have better power ratings, but still have the same issues. What can cause the phasers to reset to 0 degrees? Below is a pic showing a comparison of both intake and exhaust when working properly and how they are operation now (left graph is intake, right graph is exhaust). Any help would greatly be appreciated. Thanks!
Intake left - Exhaust right.png