Not sure what "problem" you are referring to
. I experience no noticeable throttle lag with mine.
If you keep your throttle body clean and the EGR valve is in good condition, I think you'll be fine.
If your EGR valve is no good, or your throttle body is caked thick with oil, then yes, throttle response can suffer...
There is also a procedure to re-calibrate the electronic throttle control - never had to do it, but maybe one (or all) of the above are the source of the problems people have been having?