Originally Posted By lockjaw-express
I wonder how the Wilson merge spacer would help a 4150 throttle body with direct port fuel injection?

Would be interesting to try, but expensive if no returns...

Mark
Save your money. Will likely make ZERO difference on a direct port car. Plenum spacers have to do with air speed and atomization on cars with carbs. You don't have that issue. Look at EFI cars of various configurations. Throttle body on top, front, rear, side, etc............It simply doesn't matter