I want to hear from people who have chipped a 9770. Was it successful? I have searched on here and have found only people asking the same thing but not many saying that it actually worked. My concerns r component stress on the combine (pto, belts, drives ect.) but also can the 9.0L handle the boost? I think it's around 20% from 355 to 440 the steinbauer site claims. From what I know and have read a 9770 is identical to a 9870 other than the 13.5L and the cooling system. So can I increase HP with out totally blowing up the combine? Just would like some more power for when conditions get tough late at night. Thoughts?