Best 5" exhaust questions? - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 09-30-2010, 03:51 PM Thread Starter
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Best 5" exhaust questions?

I'm ready to pull the trigger on a downpipe back dpf/doc delete 5" exhaust. I've pm'd a couple of vendors on here expressing my interest in buying a new exhaust but I received no responses. I have a couple of questions:
1. Do I need to get a set that comes with bungs, or without bungs?
2. Flo-Pro make a 4" replacement downpipe. FLO~PRO 4" Downpipe 08-10 6.4L Ford Po werstroke 841
A. Isn't the stock downpipe 4"?
B. Is there any gains to be had by going with this downpipe.
3. Is there a 5" dual exit exhaust? The real question is should I have a dual exit exhaust.
4. I plan on using 7" tip(s) that are black or powdercoated...not a question
5. which is the best brand for this application?
6. Who should I order from?

2003 F150 Lightning- Whipple 3.4l 659rwhp 711rwtq @18psi on 93

2008 F250 FX4- afe stage II, 5" Flo Pro, Elite- egr delete/wastegate/4" downpipe/cfm+/ported fuel rails
Innovative XRace-12.81@103.9; H&S Hot Damn- 13.13 @ 101.4 556 rwhp (Traded In)

2011 F150 King Ranch- Custom Status Air Suspension, 3-link (lays frame)
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post #2 of 7 Old 10-01-2010, 06:06 AM
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The bung question all depends on which tuner you choose H&S do not require any bungs , all other i think do use bungs in the pipe . The stock down pipe looks like it's 4" but it's not , it is a double walled pipe , probably for sound deadening and heat . I have the FLO PRO 4" S/S downpipe but i put it on when i put my 5" FLO PRO straight pipe exhaust on , so i don't know what the inprovements are alone . Most guys i asked said spool-up was better along with egt's being cooler . A 5" dual exhaust i really don't know if anyone offer it, 5" pipes a pretty big to have duals . I am pretty happy with the 5" S/S FLO-PRO system i have , the down pipe requires two people to put it in , one from the top and second set of hands underneath the truck .

08 F250 Ext. Cab long bed 4x4 Lariet , H&S Mini Maxx , 4" S/S Flow Pro Downpipe ,5" Flow Pro S/S Exhaust ,AFE si Intake , Pro Comp Traction Bars . Kem Mini Maxx 75 through 345 tuning .
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post #3 of 7 Old 10-01-2010, 06:33 AM
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DPFDeleteKits.com call them, they'll be able to explain everything to you.

11 F250 6.7 CC/SB -- tuned & deleted -- 3.5'' PMF/ICON/Fox suspension, Method Standards, Toyo AT2s
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post #4 of 7 Old 10-01-2010, 11:34 AM
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Give us a call and we can explain all of the options to you. Thanks!

Sales @ Rudy's Diesel Performance
*CONTACT US FOR SPECIAL PACKAGE DEALS ON SPARTAN, SCT AND H&S PERFORMANCE DPF/CAT DELETE KITS*
(919) 383-9300 OR Toll-Free # 1-866-757-6537

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post #5 of 7 Old 10-01-2010, 04:58 PM
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Agree give rudys a call


09 F250 SC/SB, 10inch Fabtech Susp., 38x15.5x20, 20inch Novakanes, Blackmaxx mini, AFE Stage 2, Doc/DPF delete, MRBP duals *sold*

2012 F250 CCSB Stock as of now
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post #6 of 7 Old 10-03-2010, 11:49 PM Thread Starter
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Okay I'll call Rudy's later on today! Thanks

2003 F150 Lightning- Whipple 3.4l 659rwhp 711rwtq @18psi on 93

2008 F250 FX4- afe stage II, 5" Flo Pro, Elite- egr delete/wastegate/4" downpipe/cfm+/ported fuel rails
Innovative XRace-12.81@103.9; H&S Hot Damn- 13.13 @ 101.4 556 rwhp (Traded In)

2011 F150 King Ranch- Custom Status Air Suspension, 3-link (lays frame)
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post #7 of 7 Old 10-04-2010, 06:02 AM
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Quote:
Originally Posted by REDL1NE View Post
I'm ready to pull the trigger on a downpipe back dpf/doc delete 5" exhaust. I've pm'd a couple of vendors on here expressing my interest in buying a new exhaust but I received no responses. I have a couple of questions:
1. Do I need to get a set that comes with bungs, or without bungs?
2. Flo-Pro make a 4" replacement downpipe. FLO~PRO 4" Downpipe 08-10 6.4L Ford Po werstroke 841
A. Isn't the stock downpipe 4"?
B. Is there any gains to be had by going with this downpipe.
3. Is there a 5" dual exit exhaust? The real question is should I have a dual exit exhaust.
4. I plan on using 7" tip(s) that are black or powdercoated...not a question
5. which is the best brand for this application?
6. Who should I order from?
1) it depends on which tuner you get.
2)yes the stock downpipe is 4". i dont really know if theres much of a gain from getting this except some lower EGTs.
3) there's only a 4" dual exit exhaust. (or atleast i've never found a 5")
4) awesome!!!!!
5) i would recommend flo pro. it fits great and is a good product.
6) i've never ordered from rudy's, but i've heard countless good things about them. so i'm sure they would be a good choice. i ordered mine from performance truck products, and he gave me a great deal.

hope this helps man!

-Mike

2005 F-250 Lariat

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Originally Posted by azkcr View Post
And you didn't know Cummins can manage 127mpg??? They also deliver babies, go to Mars, and cure AIDS. DUH
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