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

header install

Old Mar 23, 2009 | 03:39 PM
  #81  
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From: Dallas
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You should be noticing a significant gain up top with headers. I dont think i noticed any gain below 3000 rpms
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Old Mar 23, 2009 | 04:35 PM
  #82  
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From: Tupelo Ms
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my truck is still slow so it wont matter its a turd
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