
04-18-2014, 10:30 PM
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CC Member
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Join Date: Sep 2009
Location: Camarillo,
CA
Cobra Make, Engine: SPF #2608, Roush 427SR T-W
Posts: 911
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Not Ranked
I was averaging 13.5 MPG and put the lighter springs in the distributor to let the full advance kick in sooner and the mileage went up to 15.6 MPG. I don't think the springs are the only reason the MPG went up because I had a significant road trip after I put the new springs in. I'm sure the mileage went up, but maybe not that much....
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