Hmmm well that is not a lame excuse that they can not fix it because its probley controlled by the computer. There is also a computer controlled function like if you are on a hill and start roling at about 5 mph the engine will automatically pick up to 1,000 revs on the 2001 elantra, (i have the 5 speed). I also notice that the revs dont fall off. This could be something to do with the double over head cam configeration too. I had a grand prix that had 4 over head cams and it was the same way quick throtle response but took about 5 sec for it to settle back down.