Fail emissions with new exaust?
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Junior Member
Joined: Jan 2003
Posts: 57
Likes: 0
From: Chicago
Car: 1990 Iroc
Engine: L98 5.7 350
Transmission: 700r4
Fail emissions with new exaust?
If i replace My current stock exhaust setup, and get headers, 3 inch pipes, 2 highflow cats and an aftermarket muffler, will i then fail emissions? I live in urban chicago where Emissions tests are pending and difficult. When taking the test can i help cheat it with a different gasoline octane?
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Get emissions-legal headers like Hooker 2055 (modification to y-pipe required for dual-cats), Hedman 68491, or Edelbrock TES or SLP, and it won't be a problem (as long as everything else is up to snuff).
Last edited by five7kid; Feb 16, 2004 at 10:11 PM.
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