Knock on turbo motor.

[Bruce Plecan]

Oh that makes sense
Grumpy
  Not


| > | Under boost I have noticed that my car has a tendency to ping more at
| > | 3000 rpm , which I would guess is the tuned configuration of the
motor.
|
| I don't know what kind of car you're driving, but I'd be willing to bet
you
| have your EGR disconnected.  That will cause knock at certain RPM
(depending
| on car) even under light loads.  The knock is caused by a lack of exhaust
| flow back to the intake which cools the fresh charge.
| Scott