Quote Originally Posted by blacksambo View Post
Did you check for OBDII codes? Are you running a stock OEM air filter? If not try it, it gets you back to 750.
When I had the issue, it was throwing no codes whatsoever. Suprising yes, but only consider OBDII was mandated by the govt in '98 year vehicles or later. OBDII was kinda in its infancy in all our VX's. It has matured since then to include much more information.