hi guys, ever since a motor swap in the 93, the tach is not right. even the avcr shows the tach as being 2000 rpms higher. i know this because it will idle at 2500, the second turbo kicks in at 6500, oh and shifts occur at 9000 rpms plus, and i have seen the tach max out. i did not see the motor swap performed, but i disconnected the gauge harness in the pass. foot well area and the tach was moving without a signal and even with the computer disconnected the tach keeps moving about. i guess i just want peoples opinion if the wiring is shorted somewhere or if the gauge cluster somehow went bad. also the add coolent buzzer has been going off while driving for the last year until i disconnected it.