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I have a 2007 Mustang GT with Mac LT headers 1 3/4 and o/r x pipe and Borla exhaust JLT intake Sctx3 91 tune i get 16 miles per gallon which is scary already im not sure why is my mpg low but i want to put cams will this make my mpg worse than it is and please let me know why my car is wasting to much gas with the system i have already thanks
 

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A high rpm cam will waste more gas at idle but deliver more power at high RPM, conversely a low RPM cam saves gas at low RPM but stunts power at high RPM. decide what you want and pay the penalty, gas or power.
 

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Assuming you read somewhere about how a different cam will make your car soo much faster ??

C'mon... Logic should tell you that increased performance Certainly will cost you More Gas !!
 
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