JPC intake manifold

radmustangs

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havent been driving around on the intake but about a week and i have not payed attention to the gas mileage. I dont notice it being any worse.

But the ported heads and 127500 cams had the biggest affect on mpg. the computer says im averaging about 17 right now. thats down from 21 when i had 127200 cams on stock heads.
 
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