Well my 91T is running in safe mode. 2 codes I cant seem to clear; Knock sensor (which I replaced) and excessive boost. I pretty much did all I could do. I reseted the ecu and have no luck. once i put my foot on the gas the CEL comes right on or i have some days when it will take a few mins for the safe mode to get activated. If there is anyone in san diego thats willing to help me sort this problem out I would greatly appreciate it to the deepest of my heart. Thanks..