We have a pair of 2388's (2000 models) with specialty rotors with the same hrs (1000) and we are the original owners. One has great power, always has, the other is a dog and always has been. The combines are identical and no modifications have been made to either (no chips or turning up the fuel pump, etc). They are the same as the day we got them from the factory. Both have high idle around 2500rpm. What are some of the reasons for the lack of power in the one? Could it be a turbo problem. Something to do with the wastegate? We actually got the dealer to replace the fuel pump on it, but it made no difference. Should I try to chip the unit? If I chip it what is a good chip to get and what are the potential consequences of installing one of these? If I install a chip, is there anything else I have to do to accommodate the added power so nothing blows up on me? Any help would be greatly appreciated. Thanks.