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Re: ? for those with flowmaster 70 series
I don't think it matters what you put on the v10, it won't be noisy in the cab. I tried a 3.5" spintech with a turndown right behind the cab and a 3" 2 chamber flowmaster with a turndown, didn't matter, it sounded the same and there was no resonance. I don't think either one ran any better, but the 3.5 made a funky sound for a split second when I let off the gas.
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99 f250 V10 4x4 c/c lb
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