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  #1  
Old November 12th, 2014, 02:12 PM
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Rich
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Exhaust system info

All,

I dug around and know that NRP makes a good kit but it's pricey. I found a local shop in San Diego that others have recommended. They will give me a header back with new cats for $1100 or so with a borla/magnaflow muffler. Mine keeps throwing catalyst codes and with it being the original exhaust it might be time. Also, there are a couple small pinholes in the system i can here. Just trying to clean things up while I have a couple bucks to fix her up.

Thanks for your input.
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  #2  
Old November 12th, 2014, 03:17 PM
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Robert Davis
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For what model, engine, year ???
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Old November 12th, 2014, 03:59 PM
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My apologies. 4.0 / Defender / 97.
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  #4  
Old November 12th, 2014, 04:08 PM
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lots of guys don't like the throaty sound of a Borla. Which is it, you list Borla and Magnaflow, are they both on your list? Most I think go with Magna...less of a drone. One more thing, changing your system might not alleviate throwing the ox code all of the time. I changed my entire system including the manifold (from Magna to Borla) and I stuff on occasion throw a code after driving more than 8 hours.
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Old November 12th, 2014, 04:29 PM
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Rich
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Bill,

Thanks! They just can install both, so that is up to me. I might go magna as I do not want louder, I would like quieter. My end goal is to potentially have better numbers and to replace a system that might be less efficient because it is 17 or so years old.
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Old November 12th, 2014, 04:36 PM
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Well it will never be as quiet as you'd like. It simply is what it is...a tractor with creature comforts...if that's what you'd call them!
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Old November 12th, 2014, 06:02 PM
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For what its worth, I had the Borla and did not like the resonance or the volume from the system. My guess is it was due to the exit being basically under the truck. I switched to the NRP and like the exhaust note much better. I had to section and index the tailpipe to fit the mud flaps, but it points straight out the side. It sounds throaty, but does not resonate.
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Old November 12th, 2014, 06:31 PM
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I ran the NRP for 10 years and was really happy with it. Had to replace the cats, but that's to be expected.

Back then, NRP was out of Oregon, but I think they were bought out by RN, (or someone else) so I'm not sure if it's manufactured the same as it was years ago. It had a great sound, (not too loud or annoying), and was a spot on fit.
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Old November 12th, 2014, 07:00 PM
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Quote:
Originally Posted by Bill Larson View Post
Well it will never be as quiet as you'd like. It simply is what it is...a tractor with creature comforts...if that's what you'd call them!
Hey now!
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