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Old Sep 24, 2010 | 11:56 AM
  #1  
SNIPER168308's Avatar
SNIPER168308
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Tuned
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Exhaust

00 PSD, stock with Powerchips Tuner.

What's the best size turbo back exhaust, 3 1/2 or 4"?

I had to replace a muffler some time back. Muffler shop had a 4" in/out Magnaflow that we installed and just welded in the excess gap btw it and the stock pipe. I'd like to just use the same muffler instead of buying the entire exhaust with a new muffler.. Does anyone know where I can get the pre-fab pipe and use my muffler?

Any good MPG mods you can suggest.. 15.5-16 hwy at best... (3.73 gears)

Thanks
 
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Old Sep 24, 2010 | 12:02 PM
  #2  
riverrat41's Avatar
riverrat41
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From: Glen Rose,Texas
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At least 4'' but you can go 5''.I think most her go 4''.
What mods do you have??
 
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Old Sep 24, 2010 | 12:12 PM
  #3  
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SNIPER168308
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Programmer and the big Napa/Wix tractor filter (forget the part #)
 
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Old Sep 24, 2010 | 12:26 PM
  #4  
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robs01f250
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From: Bowling Green, KY
4'' is plenty big and sounds great. The only reason to go with a 5'' is becasue the sound is a little better. You dont need anything over 4'' unless you plan on making some serious power.
 
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Old Sep 24, 2010 | 12:55 PM
  #5  
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riverrat41
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From: Glen Rose,Texas
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Wix 6637 filter
Yes 4'' is really plenty.There are several non-expensive mods you can do.I guess it all depends on what you are really wanting.
 
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Old Sep 24, 2010 | 04:47 PM
  #6  
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SNIPER168308
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I have plenty of power, if there is such a thing.. anyway.. I'm looking for more mpg's w/o loosing the power I have. and if whatever mods help mpg and if horsepower increases, great..
 
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Old Sep 24, 2010 | 08:21 PM
  #7  
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riverrat41
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From: Glen Rose,Texas
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Keeping the fuel filter changed is a good thing.You can check the EPB.
In tank mods will help as well.Both are written in Guzzles site I sent you.

http://www.guzzle7pt3.com/index.php
 
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