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1994.5 - 1997 7.3L Power Stroke Diesel  

VERY POOR mpgs. PLEASE help

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Old Oct 22, 2010 | 09:11 AM
  #16  
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redman84
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From: College Station, TX
Originally Posted by Hussler
Unbolt the CAT from the down pipe and tie the exhaust aside temporary.
Take it for a spin and if it performs better go through the pain on removing or gutting the CAT.
Good idea. I think I will be doing that. Any harm in leaving it that way for 100 miles or so?
 
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Old Oct 22, 2010 | 10:24 AM
  #17  
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Hussler
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Won't hurt anything short term. I know a few have ran it that way for a long time. You will get some black soot on the under frame area. You should be able to tell pretty quick so 100 miles is not necessary.

Here is a picture of my CAT as viewed in one end with the other end pointing directly in the sun. White spot is about dime size showing light through the CAT with the rest plugged up pretty good. I will never attempt to take that off again and would recommend to anyone just to take it to a muffler shop and pay the $50 or so. that was an all day job ....

 
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Old Oct 22, 2010 | 10:59 AM
  #18  
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redman84
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From: College Station, TX
Originally Posted by Hussler
Won't hurt anything short term. I know a few have ran it that way for a long time. You will get some black soot on the under frame area. You should be able to tell pretty quick so 100 miles is not necessary.

Here is a picture of my CAT as viewed in one end with the other end pointing directly in the sun. White spot is about dime size showing light through the CAT with the rest plugged up pretty good. I will never attempt to take that off again and would recommend to anyone just to take it to a muffler shop and pay the $50 or so. that was an all day job ....

Can't see it at work. Will look tomorrow at home though. I can imagine that 15 years of diesel exhaust could pose an airflow problem through the cat though.
 
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