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      08-18-2013, 10:44 PM   #13
delano
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Drives: 2013 M6 F12 & 2013 Rover S/C
Join Date: Jun 2013
Location: Del Mar, CA

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I just installed catted AMS a few days ago with stock exhaust and was feeling a little disappointed as well with power increase. Feels stronger in 2nd/3rd gear but I feel like it might have lost some top end in the 80 to 100 mph range. Hopefully it's just the ECU needing to adjust with some more miles.... I forgot to get it dynoed to see actual increase unfortunately.
Appreciate 0