Exhaust tip function? - Ford Powerstroke Diesel Forum
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Old 12-07-2007, 04:06 PM
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Exhaust tip function?

I was going to order the MBRP for my truck and run 4" from the filter back w/o a muffler. But, a local Diesel perf. shop tried explaining to me that the cut outs in the OE tip is to push fresh air in the exhaust and lower EGT's??? This sounded wierd but I do not know enough about them. Anyone have any info on this? If it is true, does anyone know how the aftermarket exhaust's affect the EGT's and warranty?
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Old 12-07-2007, 04:10 PM
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it will help EGTs. Oh, wait i just realized you are talking about a 6.4, I got nothing on that????? The exhaust system on that thing is like a three ring circus!!!!
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Old 12-07-2007, 04:13 PM
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Someone will be along shortly who knows for sure, but I believe the issue is with the diesel particulate filter. I think when the truck goes into regen, the exhaust coming right out of the tail pipe can get very hot, so the venturis in the tip help cool it down where it comes out to reduce the safety hazard.
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Old 12-07-2007, 04:17 PM
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all it does is cool the temp of the exhaust leaving the exhaust. so you dont start fires or scorch other peoples paint while you drive by them.
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Old 12-07-2007, 04:19 PM
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Drive that POS off a cliff. And find a truck that doesnt choke on its own exhaust.

Just kidding man. I hope you have good luck with this truck. It will restore my faith in Ford to build something we can be proud off. They have all but failed us in the past few years.
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Old 12-07-2007, 04:20 PM
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I don't think they work too good, It'll still singe the hair on your legs.
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Old 12-07-2007, 04:28 PM
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August issue of Diesel Power Mag page 192 did a Gibson exhaust install on an 08' PSD that was supposed to lower EGT's. It was a cat back system and claimed to lower temps by 100 degrees.
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Old 12-07-2007, 06:03 PM
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I saw the Gibson and Magnaflow. Just didnt feel like dropping $800 on a filter back...

So, does anyone have a 6.4 with aftermarket exhaust? What does everyone think about just eliminating the muffler with the stock piping?
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Old 12-10-2007, 03:07 AM
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Mbrp has a filter back that runs around $270.00 bucks. The MBRP and magnaflow both have the cut outs like the original exhaust just in diffrent places. The magnaflow has the cut outs on the exhaust tip like factory, the MBRP has them a little further up stream in the actual exhaust piping. I will be ordering the MBRP soon soley on the purpose of the cut outs not being in the tip so i can change the tip later to an after market 6" tip
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  #10  
Old 12-10-2007, 04:43 AM
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Ford claims the stock tip must be retained or an after market one exactly like it or no warranty.
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