I had this guy http://ekotuning.ca/ come and tune 4 tractors for me. He brought a mobile dyno with him and he tuned a 8220, 7820, 7830 and a 7130 for me. All I can say is wow, it's like they are totally different tractors now. He gave the 7130 25 pto hp, the 78's close to 60hp and the 8220 around 50 hp. It's a lot like EFI live how he tunes them. This extra power is just for getting us up over a hill or through a tough spot, it isn't meant to run hard all day. I hope we don't have problems with the new found power as I'm loving it.