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      06-04-2019, 08:16 AM   #1
Lucky1
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Drives: '08 128i Coupe SGM 6MT
Join Date: Nov 2008
Location: Toronto

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Throttle and engine response - S65 vs S54 vs S55

How does the S65 V8 compare to the smoothness and beautiful throttle and engine response of the S54? And how does the S55 compare to either?


Everytime I go from my new to me 991.1 C4S to my Z4 M Roadster equipped with the S54 engine from the E46 M3 I can't help but wish the Porsche had the same snap in the throttle and engine response. The S54 is down in power but I assure you around town it is the most fun motor I own (also have an N52 equipped 128i for a control comparison).

The BMW engines are smoother, more velvety in revving but of course are less brutally powerful than the Porsche. All are top end power making motors and I love them. They are perfect examples of why an engine's character is more important than raw power particularly when power figures are equal.

Given my love for the S54 I'm wondering if its time to seriously consider replacing the 128i with an E92 M3 before they're all high mileage and beaten up between multiple owners.
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