Originally Posted by tshrey
The problem is a standing wave in the fuel line. You can make it totally go away by removing the 8" piece of fuel line running from the damper to the hard line on the manifold and replacing it with a ~3' section of fuel line. Zero the load compensation tables and it is totally gone.
Thread here starting at post #13:
I have found this to be the very best fix to date as well. Works perfect on stock injectors and aftermarket as well.