Running with open headers
Thread Starter
Junior Member
Joined: Jan 2003
Posts: 9
Likes: 0
From: Missouri
Running with open headers
I just finished installing headers on my 90 Iroc (350 TPI, SD car). When I took it for a quick spin around the neighborhood with open headers my rpm's were a roller coaster and would not stay still at idle or at various speeds. My question is will running open headers cause your rpm's to go crazy or is there some sort of problem I need to address before I take it in to the exhaust shop?
Last edited by Quasimo1; Jun 2, 2004 at 05:04 PM.
Supreme Member
Joined: Jan 2002
Posts: 3,852
Likes: 1
From: Valley of the Sun
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
Open headers should not be causing this. I bet you disconnected some stuff while putting them on and didn't put it back.
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
What headers? How "open"? Where's your O2 sensor?
Depending upon the answers to the above, it isn't too hard to imagine being open causing the problem.
Depending upon the answers to the above, it isn't too hard to imagine being open causing the problem.
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