Your tune or TB is set up wrong or you have a vacuum leak. Don't drill holes. Drilling a hole is no different than resetting the throttle closed stop except you can't adjust it or undo it. It's dumb advice.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. 89 LX. 363, single turbo S482 FMW, Super Vic EFI, Fox Lake Stage III heads, solid roller, glide. Holley HP EFI. (combo varies)