GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

4 inch exhaust on an avalanche need help

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Old Dec 2, 2011 | 02:16 PM
  #21  
1SlowHoe's Avatar
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I get backpressure with my blower. Everytime I hit the gas my back puts pressure on the seat. I get butt-pressure too but, that could be the tacos.
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