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Old 10-03-2012, 12:58 AM
TerraPhantm TerraPhantm is offline
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Location: State College, PA
Join Date: Nov 2004
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Mein Auto: 2005 M3 Coupe
Originally Posted by P_T View Post
The 3.46 will get you from 0 to what every faster than a 3.07 unless there is some internal problem in the differential, that is just simple physics. The 3.07 will give you fewer RPM at the same speed thus saving fuel. If the software limit was not modified, your top end will be the same, you will just be reving higher. If the speed limiter is no longer present, the top end will be higher with the 3.07.

BTW, it was a good visit in Bama, a pleasure to visit face to face. I checked the clutch's not for 6-speed.
Not necessarily. 0-30 for example may be faster, since that'll still be within 1st gear. 0-60 may be slower because 60 requires an extra shift with a 3.46. 0-100 may also be a bit slower since the ZHP just barely gets to 100 in 3rd w/ a 3.07 iirc.

Averaged out, 0 - top speed should occur in roughly the same amount of time. With a 3.07, a ZHP could hit its top gear in 5th gear. A 3.46 will require you to shift to 6th to hit 155. So it'll likely end up being the same amount of time.
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