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will straight pips blow my motor

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  #11  
Old 10-04-2006, 11:03 PM
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Default RE: will straight pips blow my motor

ORIGINAL: tommyd

Most of the motors have had things done to them. Aside from my grandpas truck which is an unknown. I beleive it to have mild headwork done to it but he bought it like that and hasn't really done much but change the oil. My 4.3 has just an intake and the exhaust on it. Though I still have the stock cat which is (if I am correct) the main source for back pressure and shouldn't be a big issue if you still retain SOME back pressure. What kind of mech. failures are we talking here?
ive seen countless valves go bad with no backpressure and yes the cat is the main source, but if you have any sort of inspections be it emissions and/or safety the cat needs to stay.
 
  #12  
Old 10-04-2006, 11:28 PM
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Default RE: will straight pips blow my motor

Yes, I have also hear of burnt exhaust valves with decreased backpressure.
 
  #13  
Old 10-05-2006, 11:44 AM
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Default RE: will straight pips blow my motor

Thanks for the info. We don't have any sort of inspections here but I planned on leaving the cat any how since it's still illegal to drive on the road with out one. I'm pretty sure my cat is toast anyhow seeing as how I was averaging 22MPG on the highway and now I'm averaging 16.
 
  #14  
Old 10-05-2006, 11:22 PM
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Default RE: will straight pips blow my motor

ORIGINAL: tommyd

Thanks for the info. We don't have any sort of inspections here but I planned on leaving the cat any how since it's still illegal to drive on the road with out one. I'm pretty sure my cat is toast anyhow seeing as how I was averaging 22MPG on the highway and now I'm averaging 16.
Get a hiflo, its more money but not much more, and itll have the flow you want.


If your cat is toast, that might be the decrease in mileage due to it being clogged, or broken and blocking the flow.
 
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