I recently upgraded from a 2001 3.0 to a 2005 4.4 with sport package. I noticed that the 4.4 is not nearly as responsive off the line as my old 3.0. Any body else notice this? Is there a fix? new trottle body or chip maybe. I'm not sure what to do at this point. I have already taken it back to the dealer and the tech said he reprogrammed the computer so it would be more responsive. I didn't feel any difference. Any suggestions?