temporary open headers ok?
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TECH Junkie
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Joined: Aug 2003
Posts: 3,465
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From: Tallahassee, FL
temporary open headers ok? heres my dilemma. the exhaust shop doing my true duals wants an arm and a leg to install my jet-hot LT's, so i plan on installing them at my house with a few friends who have installed LT's on LS1's before. i was planning on just getting the headers in, hooking up the front 2 o2 sensors (with the extensions), plugging in the 02 simms in the back, then driving the car to the exhaust shop (about 15 miles away). is it safe, or am i risking engine damage? thanks!
Re: temporary open headers ok? i ran with just my LT and custom Y for a week before my catback can be installed.
two words; LOUD as ****. it sounded badass but it gets old after a while. sounds like a beast when you first crank it over
. just keep the revs down so you dont draw unwanted attention 
two words; LOUD as ****. it sounded badass but it gets old after a while. sounds like a beast when you first crank it over
. just keep the revs down so you dont draw unwanted attention 
TECH Fanatic
Joined: Feb 2002
Posts: 1,782
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From: Friendswood TX
Re: temporary open headers ok? No but your car may run funny, Ive always heard that you need 18 inches after the O2 sensor for the PCM so it can read correctly. It wont hurt anything, watch out for the police though!
Re: temporary open headers ok?
No but your car may run funny, Ive always heard that you need 18 inches after the O2 sensor for the PCM so it can read correctly.
) for about two weeks. No problems but it did set a low volatage rear O2 code once(wonder why ) . Pretty damn loud, too 
TECH Senior Member
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
Re: temporary open headers ok? Yes, you do need extensions off the headers (18" is the general rule but a little shorter may work) for it to run right but I thought he said he would run them. Reading it again I think he was talking about wire extensions for the front O2 sensors. Running the open headers without extension will make it run TERRIBLY rich because the O2 sensors will be making contact with outside air and getting a false lean reading.
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Thread Starter
TECH Junkie
iTrader: (23)
Joined: Aug 2003
Posts: 3,465
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From: Tallahassee, FL
Re: temporary open headers ok?
Yes, you do need extensions off the headers (18" is the general rule but a little shorter may work) for it to run right but I thought he said he would run them. Reading it again I think he was talking about wire extensions for the front O2 sensors. Running the open headers without extension will make it run TERRIBLY rich because the O2 sensors will be making contact with outside air and getting a false lean reading.
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Joined: Nov 2001
Posts: 1,724
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From: Fenton, MI
Re: temporary open headers ok?
You're not risking engine damage. You could run it from now on like that (but your neighbors and the cops might not like it!)
hearing damage...pretty good chance
LOL
