Today on the way home from work I was driving normally like I do, just commuting, and from a coast I went to accelerate lightly from about 25mph and it felt like the transmission was still in 3rd or even OD, and the motor was bouncing RPMs from like 1300-1800. When I hit the gas hard enough it downshifted finally, and went through first gear fine, then also shifted into second just like normal. I have only put 100 miles on the car since I got it, and it has a custom dyno tune. Like ten minutes prior to it acting up I had an advanced auto scan it to see if any codes were thrown (looking to get emissions done). Needless to say I am frustrated... Earlier today during my lunch break I had taken the car out with two friends, and I did a couple WOT pulls, from a dead stop and from like 35mph roll. Everything was fine and good and tight. Any input would greatly be appreciated! I can do anything to a motor, but have not really been inside of a trans, although I have done shift kit installs.. Any questions just ask, I will do my best to explain anything for you.