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Old 10-03-2010, 09:15 PM
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WardL WardL is offline
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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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I have averaged 13 mpg and have a range from 12 to 15 mpg. Roush 427 SRTW, 512HP, 17" wheels, 3.46 rear ratio and 0.82 OD. At 70 MPH I'm turning 2,550 RPM. I just found out my ignition timing total advance is 32 degrees at 4,200 RPM. 16 Deg at 900 RPM.

209 - what kind of cruise control do you have?
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