I have a 2013 997 turbo s. I installed kline 100 cell cats w muffler. Ipd intake. Champion intercoolers and giac software. If I am in stock tune car shifts fine bangs thru the gears like it did when I first got it, if I put tune in shifts seem to hang up a little. Not over rev, it hits around 5800-6300 kind of seems like the trans is getting held up then hits shift point and shifts hard and good. Any one else got this bug

 

Exact same thing happened to me on the 1-2 shift at WOT when I upgraded to stage 2 and got r888 tires. PDK needs to adapt. Took a little while but eventually it went away.

 

Try having ur PDK reflashed/calibrated

 

Sorry for hijack , how can you recalibrate a pdk ?

 

I had dealer do mine. I was having a odd hang up 3-4 shift in sport or sport plus in auto. Once they reflashed everything it all went away.