I just want to add that there is nothing wrong with a little more extra boost. But hey do what you want and it'll be at your own cost.Hi Gentleman, I read this post & simply had to respond to ISFonroids BOY,emphasis added.... A reality check is in order. When you purchase any product & then clap the shit out of it & then blow it up you xpect a warranty??? Kindly xplain that for me. As a former M/C roadracer & current Auto trackday guy I can absolutly assure you that your quwest for warranty is misguided at best. Be it BMW or any other manufacturer.My Q for you is why would you need to boost your ISF??? 416 to little for ya?? Ever seen a road course? Ever been on one? Ever drive on one? Ever win anything on one?? I didnt think so. Cheers & dont get your skirt caught in the closing door please...