[Chuckie]

First off, I used to have a 2002 firechicken. Yes, the auto on the pontiac is more responsive than the tiburon...much more. Comparing a firebird auto to a tiburon auto isn't going to tell you much aside from gm and hyundai make totally different products.

But you sure the UTI-grad wasn't looking under the hood of a new mustang? Pop the hood, have someone step on the gas pedal, and watch the cable pull the tb plate open.

Compare a tib auto to another tib auto to determine if there's a problem. Since you're at the dealer, test drive another auto tib for reference. If it is noticeably different, here's a couple of suggestions:

1) The trans. fluid should be changed every 30k with only Hyundai fluid. You should have had one already and be half-way towards your second service. If it was skipped, do it now.

2) Reset the ecu/erase the memory and drive normal for about 50 miles. No wot, no short sprints...just regular crusing. Then see if it addressed the problem.

Hope this helps.

 

[Chuckie]

There was a tsb reflash available to deal with shifting issues on the auto, but that won't matter if you didn't do the 2 things I listed in my earlier post. That may have been for earlier models though.

You are doing the right thing by taking the fellow tiburon owner's answers over some dealership guy in a monkey suit. That's what this site is for, but nobody here is going to care for YOUR car more than you (and your brother I hope), so take the suggestions and don't persist on making the dealership care about your car.

For the record, yes drive-by wire equipped cars (electronic throttle) may experience acceleration lag, but this is obviously not your problem.