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Old 06-01-2011, 06:32 PM   #164
Registered User
Join Date: Apr 2011
Location: South Carolina
Posts: 669
My Ride: 330i 5 speed
it really depends on alot of things, but since you're coming from what 300whp and hoping to get up to 415 it might not be necessary but would probably be advised
sedanpowersc is offline   Reply With Quote