electronic throttle control
 

has anyone tried these on there rx 350 ive seen them on an is350 and it was awesome

Are you referring to a throttle adjusting module? You may want to clarify, because the RX330+ comes standard with a drive-by-wire throttle.

ya u can get them for the isf basically it makes it so when u hit the gas pedal there is instant reaction instead of a small pause then acceleration they are made by all kinds of companies like blitz and toms

I've often wondered about the response myself. Never bit that bullet because I figured it's a lot of money to dish to make my slow car go a little less slow.