I don't believe in that either and if thats what they want then the dealer should do it as part of pre-delivery ins, i know my dealer checked to make sure the low oil light worked maybe thats what they are getting at if so you would think they would be able to check all warning lights from the factory, seems like a bad thing to run the motor that hot right of the bat and it should never be left up to the purchaser. Just another thought i remember someone saying that the rings would have a hard time seating properly burning so rich like these cats do and the reason why i say this is because my pistons had minor scuffing on them when it was burning rich (stock), after i put the slp pipe package on it leaned it out alot and after examining my pistons again they were perfect they looked way better no more scuffs i wish i had pictures it was a big difference. JMT