So I'm new to the 03 cobra world. I just finally got mine in August, (always had mustang GT's). I thought I knew quite a bit from hours of research and youtube videos but was a little disappointed in the power on my first test drive to be honest. I had a five hour ride to see and purchase my dream car, (black 10th anniversary) and after all the saving, searching and dreaming. Was I really going to back out of the deal? Luckily the car was clean, low miles and all the right (mild) mods I wanted. So I took the leap of faith, bought it and figured maybe the tune wasn't the greatest. I was even getting some funky smells when I did 2nd to 4th gear WOT pulls (timing compensating for heat???). All this was with 85 to 90 degree days with high humidity. Fast Fwd to some cool weather and WOW what a difference, pulls hard with no smell. The first time I drove to work with a cool 50 degree morning, getting on the interstate took me by complete surprise. Got squirrelly with drag radials then hooked and pulled hard. I'm loving these fall like temps in WI.