You did the TH fix, but you may have to play with hole sizes as not all cars like the same plug hole size.
Originally posted by The FAQ:
For the SVT, or a car equipped with the SVT intake, the optimum hole size in the plug seems to be 3/16" or 7/32". For the stock intake, the best size seems to be 15/64".
I tried all 3 and still got the moose.