2005 S600 w/ECU tune VS 2006 S65 AMG stock ?

I am ready for a ECU tune( prefer by Renntech) and wondering can I keep up with a stock 2006 S65 AMG ?? Anyone know this ??
Thanks,



For many years I owned 3 V12 BiTurbos, two SL600's and an S65. I still have the S65 and the newer SL600. Keep in mind the SL600 is 500 pounds lighter than the S65. Stock S65 is noticeably faster than stock SL600. The SL600 with a good ECU tune was just about the same as the stock S65. I could definitely tell the difference between my tuned SL600 and my wife's stock SL600. Add the 500 pounds for an S600 and they will be close but not quite. You can make the S600 faster by having it custom dyno tuned. I would recommend it. I had the S65 ECU tuned. The performance gain from an ECU tune on the 65 was much more than on the 600. Tuned S65 to tuned SL600 even with the 500 extra pounds is really noticeable.
If that's the question, then surely you'll just end up getting a tuned 65!?!?!
Nick




Your comments about the 55 & 600 are interesting. Fans of the 55 often describe the 600 as torquey but less exciting to drive.
Nick
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...Its more of a curiosity thing than wanting to go faster. I think I've seen a few people claim that the improvements with TCU tune is actually more useful to V12TT cars than the extra power?



An ECU tune will really wake up an S600. I am not sure what is done on the TCU tune that would make a bigger difference than an ECU tune. Best would be to raise the shift points slightly and replace the "C" program with an "M" program. 65's have all three.






