I currently have a 2007 apex se with an mcx kit in it set at 12 lbs. i want to set it up to 17/18 lbs boost and was told by PG yamaha that i needed a larger turbo to do it. I thought you could just set the wastegate and only required a different fuel pump. I thought the mapping in the 07/08 kits allowed for this and didn't require a turbo change. Who has upgraded from 260 to 310 and what was required to do it? I understand fuel requirements and clutching changes but a turbo?