Open Headers Question
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From: Miami, Fl. - Hurricane Highway
Open Headers Question I a few months ago ran my car open headers and loved how loud it was. But by the end of the night the car ran like ****, couldn't hold idle and drove like crap. I read in a thread on here that if i disconnected my O2s on the collecter that my car will be able to run alot better than if i ran with the O2s hooked up. Can i **** my car up running it like, and if its driveable is it even driveable that it will perform good at WOT. I would go get a set of 12" pipes done to put them in place but i don't have the time tomorrow to go do it. Going a on a small cruise with a couple of Lightnings and wanted to ride out open headers 
Any info would be great thanks alot.
-Joel
Any info would be great thanks alot.-Joel
Originally Posted by AncientRgn
You can do that but only for short periods. I would be carefull because you are looking at burning your valves and possibly worse.
Brent
You can run open headers without O2's on a stock cam. The factory uses a volumetic efficiency table that replaces the functions of a carburator. As long as you don't have extensive modifications, it is accurate enough to calculate your fueling. Remember, O2's give feedback for fueling corrections at part throttle only. When you floor it, the car ignores the O2's all together. So, removing them won't hurt any. You might see a slight loss in your MPG's. But, that's about it. Check around the PCM tuning section and you'll find some threads backing this up. 
