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      09-26-2013, 05:32 PM   #62
Jonjt
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Drives: 09 E92 335i M-sport
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Quote:
Originally Posted by Carl L View Post
Yup, if I remember correctly the same is true of the walls on Merc's recent 5.5 bi-turbo when compared to BMWs 4.4 V8. Big capacity doesn't always mean bigger aftermarket gains on FI engines if initial capacity was gained through it being bored out, with exceptions and other factors involved of course.
Indeed.