Hey guys, I have had this problem for a while but haven't had time to really post about it yet due to good old college work :noplease:. Ever since I turbocharged my car and replaced my ecu with an '03 (along with the '03 reluctor and immobilizer) my tach. drops to zero and twitches as if there is an electrical failure whenever I am in a low torque open throttle position, (ex.-4th gear climbing a hill at 1500 rpm). I replaced the ecu in order to use ecuFlash and EvoScan since I have a '00 GS. Its really more of an annoyance than anything, and gets annoying as hell on the strip trying to stage when the tach is jumping around... but there is no power loss what so ever. I wasn't sure if this could be linked to the new '03 reluctor somehow throwing off the reading? Any ideas of something I could test? Thanks!