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headers and exhaust??

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Old Mar 30, 2002 | 05:51 PM
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Default headers and exhaust??

will adding long tube mac headers and off road y-pipe and 4in mufflex exhaust help or hurt a basicly stock engine. i know it will sound wicked <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> , but is it going to hurt the motor?
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Old Mar 30, 2002 | 06:51 PM
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Default Re: headers and exhaust??

It will help the motor by reducing the backpressure.
You will also gain 15-30hp.
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Old Apr 1, 2002 | 07:32 AM
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Default Re: headers and exhaust??

It allows less back pressure thats all. Plan on having plugs ans wires done at the same time, ans do this http://ls1info.com/article.php?sid=85 air mod first!! you can call paceparts.com for the kit. ITs real easy to do. Trim the gaskets to clear the drivers side's lip and double stack them. You'll see what I mean. ASK if you have ??'s
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Old Apr 4, 2002 | 11:59 PM
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Default Re: headers and exhaust??

well the exhaust got done. LT headers off road y-pipe and 4 inch flowtech exhaust. the car is running like sh%t! it wont fire over 4000rpm, it falls on its face. it wont hardly idle, it wants to kill itself then it catches back up. it also thew a SES light.

whats the deal? i am thinking it has lost too much back pressure or some thing, or fried an O2 sensor or something. it has a wicked exhaust leak too. my buddy is thinking of takeing the car to have 3 inch pipe put in place of the 4 inch to give it a little more back pressure.

what do you all think??? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
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Old Apr 5, 2002 | 01:45 AM
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Default Re: headers and exhaust??

Its absolutely NOT caused by the loss of back pressure.

You have screwed something in the system, maybe you burned some wires? Didn't connect them all? Get that SES light scanned with ATAP or some other diagnostics tool.

Who did the install? If you have a "wicked" exhaust leak, maybe the installer wasn't experienced or skilled enough to do it properly.
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Old Apr 5, 2002 | 07:14 AM
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Default Re: headers and exhaust??

even a extremely bad exhaust leak would cause what he is describing. you definately have an electrical problem. get it scanned.
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Old Apr 5, 2002 | 08:54 AM
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Default Re: headers and exhaust??

I ran my car with open exhaust manifolds once. It idled just fine with no stalling, etc. Lack of back pressure is NOT your problem here. Probably loose, disconnected, damaged plug or wire.
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Old Apr 5, 2002 | 01:19 PM
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Default Re: headers and exhaust??

i was thinking it had a exhaust leak throwing the o2 sensor for a loop. where could i get a hold of a scanner or autotap?
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Old Apr 5, 2002 | 01:22 PM
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From: Schiller Park, ILL Member: #317
Default Re: headers and exhaust??

You'll have to find someone local with a-tap, unless you want to buy it for yourself (it's a good investment). If you want to drive up to Chicago I'll a-tap it for you. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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Old Apr 5, 2002 | 05:46 PM
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Default Re: headers and exhaust??

found a bad exhaust leak. got it fixed and it runs better but still bogs down above 4000rpm. i am thinking bad plugs or o2 sensor. gonna change them all and see what happens. <img border="0" alt="[hail]" title="" src="graemlins/gr_hail.gif" /> <img border="0" alt="[Chevrolet]" title="" src="graemlins/camaro.gif" />
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Old Apr 6, 2002 | 06:32 PM
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Default Re: headers and exhaust??

Are you running O2 sims on the back O2's?
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Old Apr 7, 2002 | 07:57 PM
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Default Re: headers and exhaust??

no O2 sims. it is running liked a scalded dog right now though.
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