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Old Jul 31, 2008 | 11:07 PM
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muddingmcdude's Avatar
muddingmcdude
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From: dryden,michigan
exhaust question

soo my mechinic said he could put a exhaust on my truck dual 3in from down pipe back i would think?? would that be any good?? or do i just buy a 4in exhaust kit with downpipe?? i guess what im asking is would it make any differnce dual 3in pipe or 4in exhaust ??? i would guess both would lower egt because technically it would be 6 inches of exhaust right?? i dont know lol some opinions would be cool
 
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Old Jul 31, 2008 | 11:52 PM
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Who is your mechanic? Just wondering since I am from around your area, and I might be able to get you somewhere to help you out a lot better.
 
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Old Aug 1, 2008 | 10:14 AM
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hes just a friend of my dad he does works for my dad and he also has his own garage ... he just put it on his tow truck 94 chevy 6.5 lol i just figured if i could save a few $$$ to have him do it instead of buying a exhaust system i guess i still prolly just buy a exhaust system i was just curious what people think???
 
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Old Aug 1, 2008 | 10:15 AM
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Doing a dual from the turbo back would be a real pain, my guess is he'll run a single pipe back a ways then split it like the other dual kits. If you want duals, order the MBRP kit or see if your guy can fab up some 4" duals.
 
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Old Aug 1, 2008 | 10:18 AM
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Our stock pipe is 3.5 inch. Go with a 4" turbo back. I have the MBRP SS, turbo back. Don't go down, go up with the pipes. You will like the looks of the 4" rather than the 3".
 
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Old Aug 1, 2008 | 10:36 AM
  #6  
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Originally Posted by superduty4x4
Doing a dual from the turbo back would be a real pain, my guess is he'll run a single pipe back a ways then split it like the other dual kits. If you want duals, order the MBRP kit or see if your guy can fab up some 4" duals.
I would go with the kit myself. 4" Turbo back would be ticket. It's already custom bent to the frame of the truck. I had an outrageous quote from a exhaust shop to fab one up so I went with the kit and installed it myself.
 
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Old Aug 1, 2008 | 12:40 PM
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Here's the math.
3" exhaust yeilds 7.065 square inches of exhaust area within the pipe.
3.5" yields 9.61
4" yields 12.56
Go with the 4" downpipe and 4" exhaust.

 
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