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09-09-2012, 11:35 AM
BimmerPost Supporting Vendor
Drives: E90 M3
Join Date: Aug 2012
Location: Norwalk, CA
Originally Posted by
What is the difference between the 620 and 650 kit?
The VF620 kit runs 6.0-6.5 PSI. The VF650 kit runs 7.5-8.0 PSI and requires 93 octane / sport exhaust.
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