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      07-19-2016, 07:45 PM   #10
A Frankfurt
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Drives: German
Join Date: Mar 2015
Location: Murrieta CA

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Quote:
Originally Posted by ARC550 View Post
This is nuts.. 670+ with just tune.. How much boost you running?
It is possible.
I know of a few California S63T engines running in the low to mid 670's on just a flash tune and downpipes.

My opinion is that at that power you need really need upgraded clutches to be able to really enjoy the power. Clutches will slip for sure soon enough.