5.9L 12V Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity

Suggestions for new exhaust

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Old May 7, 2012 | 09:43 PM
  #1  
Jackrabbit's Avatar
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From: Saint Paris Ohio
Default Suggestions for new exhaust

Any ideas for new exhaust, Turbo back, for my stock 98 12v?
The only upgrades planned in the near future are a TST fuel plate. looking for more towing power and fuel economy.
What are some good brands not to pricey.

Thanks
 
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Old May 7, 2012 | 10:25 PM
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holset cummins's Avatar
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since you arnt looking into any big upgrades, i would go with a 4" straight pipe. i have a friend who got his custom made at a exhaust shop and it was a lot cheaper than a brand name so see what your local exhaust shop says if you want to go in that direction.
 
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Old May 8, 2012 | 02:05 PM
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Post up in the price quote section! One of our vendors should be able to hook you up
 
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Old May 8, 2012 | 05:40 PM
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x2 for vendors woot!
 
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Old May 8, 2012 | 07:53 PM
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Straight piped 12 valve sound so sweeeet. That sound cannot be matched by a 24 valve 3rd gen. Its a sound all its own. IMHO Even better with stacks!!
 
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Old May 8, 2012 | 09:04 PM
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Thanks to all
 
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Old May 9, 2012 | 10:02 AM
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I put a 4" straight pipe on my stock 12V, lost economy and no appreciable power increase. It's loud. I don't mind it, everyone outside the truck complains. Based on my experience though, I'd say it's pointless without more mods to justify it.
That all being said, I also have a stock auto, which may be taking any power increases and puking them out as heat because they sure as hell aren't getting to the wheels.

Regardless, I got the MBRP turbo back on ebay for $260 shipped, before I knew about the vendors here.
 
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Old May 12, 2012 | 10:54 AM
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how does opening it up lose economy? its letting the engine breath better
 
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Old May 12, 2012 | 01:52 PM
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I wish I knew. I was expecting at least 1-2mpg improvement, and I got a 1-2mpg loss instead. It certainly wasn't because I couldn't discipline my right foot with all the new power, because there wasn't any. Lest I sound like a total party pooper though, I should mention that when I'm pulling a trailer the temp stays down better. I haven't gone over 190 since doing the exhaust. It was worth doing just for that.
 
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Old May 12, 2012 | 05:30 PM
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hmmmm sounds wierd to lose on exhaust. but ill be doing 5" exhaust for me but i work for carquest so i can get the piping for cheap. ill do 5" from down pipe to a 90* elbow 6" behind the cab. and when i get the money ill get a 5" down pipe and itll be complete. but the vendors always have great deals i just like doing as much custom work as i can so i can say its mine
 
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