As I understand it, the power drop between the 92 500E and 93 500E was due to benz turning down the full throttle fuel enrichment and that under full throttle, there are no air/fuel ratio adjustments being made by the computer because it is in an "open loop" condition so it relies on the pre-programed factory settings. If all this is true, then if we put a very high flow exhaust and a nicer/colder ram air intake are we going to lean our cars out too much? Did this same "turning down" happen to the 93 400E but the power loss was negated by the increase in compression that the 4.2 received? (And why didn't the 5.0 get that increase?) Is there anybody out there that does "chips" for us? Is there anything else that can be done? (Please I want to keep my 2.24s.) We live in a day of 381 horsepower 14 second toyota pick-ups friends and we need to prepare ourselves! Thanks to all that respond. Eric