Originally Posted by ksfrogman
I can't tell at all. The open differential mod made a huge difference, but the throttle body swap seemed so inert that only a dyno might reveal a change.
One more idea you might consider. You could use a metal flat washer and long bolt. This would plug up the hole, and you wouldn't have to worry about pieces dislodging into your intake. You might use high temp silicone to seal off the other end of the bolt to which you would fasten a locking nut or nut/lock washer.
Here's an "x-ray" drawing:
This would cause a turbulence in the intake flow... no good. If you found a way to make the portion of the bolt/washer that protrudes into the intake boot flat, then cool.
Also, speaking of turbulence, that's the secondary job of the silencer. It lowers noise AND acts as a buffer for intake pulses.