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Re: ? for those with flowmaster 70 series
FWIW
I called Flowmaster Tech Suppport and asked them about the 40, 50 and 70 series. They recommended the 70 for the V10. They said they designed the chambers for the larger displacement to get a good sound without the in-cab resonance.
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2002 F250SD Lariat, V10, 4x4, auto, 3.73LS, SC/SB, camper & off-road pkg. - added Silver Stars and SUVLights Harness, Pioneer Premier FH-P800BT deck, PRS-X220 amp and TS-W1240C sub, Pioneer GEX-P910XM XM Satellite Tuner, K&N FIPK, FM50 Delta Flow, ART Rotors, Performance Friction Pads, 285/75R16 Bridgestone Dueler A/T REVO's. - 12/01
2003 Mustang Cobra, black convertible. - 6/07
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