That is a good question. From what I understand there is not going to be a set increase that would be uniform accross the board, but will instead depend on the car. You can measure the boost difference, but HP is going to vary. Ask "the understudy," from what I understand brian knows a bit about this area. Kevin, you got an answer? Additionally, based on this feeler there seems to be sufficient interest in the 16t to warrant my not turning it in as a core and instead doing a little more leg work to get it under one of your hoods! For the time being though lets just send me PM's about it so this thread doesnt take up room from some other people with items ready to sell. When I get mine off the car I'll change the title to "FS" and bump it up, and let everyone know via PM that was interested about its availability. Cheers!