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Author Topic: catalytic converter or not?  (Read 694 times)
ttomas
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« on: August 22, 2007, 05:20:58 AM »

Can anyone guess or say for sure that I have a catalytic converter? It's a stock New Jersey transit with the 6v92. I have never been happy with the performance. After reading a post on this forum, I think this is a possible issue. I have all clean and new filters, no smoke or Known problems with the engine. It is a relatively fresh engine. Thanks, Tomas
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JackConrad
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« Reply #1 on: August 22, 2007, 06:11:11 AM »

Is this a DDEC controlled engine?  If so, you might need the DDEC re-programed for more horsepower.  Jack
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Chris 85 RTS
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« Reply #2 on: August 22, 2007, 09:40:05 AM »

Look at your muffler.  It is a cylinder with two band clamps in the middle about 6 inches apart, then you have a cat for sure.  If it is some other configuration, I can't say.  My MUI 6V92TA was an EPA rebuild and had a cat.  They can get plugged and affect performance.
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1985 GMC RTS II 40x96 6V92TA MUI V731 IFS
ttomas
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« Reply #3 on: August 22, 2007, 11:36:50 AM »

Thanks Chris,there are two bands closer to the back of the muffler and they are 6" apart.
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