Ok was reading through the new rule book and it had an updated section pertaining to boost regulation. The rule states that a boost regulation device can be used and pressure changes resulting from this are allowed. So my initial understanding is that boost controllers are now allowed in the sp class. However, when I kept reading I noticed they do not allow for pulley changes on superchargers. Now to me that seems a little unfair to let turbo cars increase boost, but not SCed cars. Now an older rule is still in effect saying we can't mess with the wastegate, which would also raise boost and effectively do the same thing as a "boost regulation" device. Can someone whose actually entered into an SP race this season verify the actual meaning of the new revision? Also I was a little fuzzy on the emissions system rules. I've had several people tell me that I can remove lines and the actual egr vavle, but the rule book says the system can be disabled but not removed. I'm a very honest person so I dont want to break rules, even if its accidentally.