fixing the Electronic Throttle Control (ETC)

[TheRipster]

i did a search but can't find anything on this topic...

just got a 2004 X5 3.0i, and the throttle control is KILLING me. i had a 2002 540i that i had modified that computer with somehow... someway.... many years ago. now i don't remember how i did it

the throttle response on the X5 is so bad that i feel i will get in an accident. i go to accelerate to make a turn, and for a good 2 seconds, nothing happens, except that i start rolling out in the middle of the road. then all of a sudden it feels like i stomped on the gas and then i get moving

i want the same "punch" i had in my e39 pedal!

i am looking at some programmers on some BMW sites, and they are a lot of money for a little accessory that i'll only need to use once! is it possible to buy a used one and program my car, then re-sell it?