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      04-30-2014, 01:08 PM   #60
JB3CK24
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Drives: 2003 BMW 330i ZHP 6MT
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Location: San Diego, CA

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Quote:
Originally Posted by Neverenoughboost View Post
No the s54 wasn't detuned.
This is correct.

S54 in Z4M and Z4M Roadster and even the later 2001 Z3 M Coupe/Roadster had subtle exhaust differences that limited the power to 315 hp in some cases.
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