Has anyone removed the butterfly plates in the lower intake? If so how did it run? did it pick up any power or what problems did it cause?

 

you will lose low end torque and may have a hesitation in the low and midrange rpm....also your mileage will drop for low speed driving...
you will have about 15 more hp.

if you change the vehicles gears (say 4.10 from 3.21 's), you can get rid of the low rpm issues. power will be up along with your rpm at any given speed...
your fuel mileage will suffer...

 

Thanks for the Information.