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The guy who put my long tubes on and did the exhaust said I need to tighten the header bolts after a few days? I just remembered this now and I'm going on a 200+ mile trip with a fair share of gravel road/heavy hauling involved.

The headers were put on a week ago with 100-200 miles on them. Is this a must do tonight? (fricken 17 degrees outside + no heated garage) Or will I be ok on this trip?

Follow up question the check engine light is on cause of that dang O2 sensor anyway I can block that or am I destined for that to stay on?

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Speaking of the cel being on.... Why does it come on? Is it because there are no catalytic converters? Because is has moved down the exhaust stream and the temps are out of its range now? I want to upgrade my exhaust but I don't want cel hassles. As far as the header bolts go... I remember I lost a few bolts within a few hundred miles of doing headers when I had a mustang, it made me a believer in locking header bolts.
 

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when i did my exhaust it came on and i took it to a mech, who had it for 15 min and fixed it i dont know what he did but its off and it works when theres something wrong......
 

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I would recommend using OEM Gaskets and bolts. Beyond that, I think that you should be ok. If you dont have any exhaust leaks that you can hear, then you should be ok for this trip. They usually need to be retightend because the metals are being heated and cooled for the first time. You would hear a exhaust leak if you needed them to be tightend right now though.
 

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Also, do you not have cats? You are getting a cat efficency code. Becuase the cats are not there, they cant do their job. You can look into o2 sims or I have also heard of people taking the o2s out and putting them in like a coke bottle.

If you do have cats, then you can get some o2 sensor non-foulers. This will extend the 02 outward from the bung and keep the light off. Here is the thread that my buddy made when he did his.... He got a cel light after long tubes becuase the flow was too high for the sensors to read. So he got a cat efficiency code.

http://www.dodgetalk.com/forums/showthread.php?t=117567
 
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