4" vs. 5" - Ford Powerstroke Diesel Forum
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post #1 of 19 Old 12-25-2007, 05:22 PM Thread Starter
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4" vs. 5"

I need to get an exhaust, i was lookin at a 5" aluminized mbrp. I was told that a 4" system is fine but whats your guys opinion? What are you running and how do you like it?


I installed the aFe stage 2 today and am installing the edge tomorrow i think. Im also planning on straight pipe for the exhaust.

5" or 4"????

Joe

White 2002 F350 7.3


Pinch weld covers
Amp steps
KMC XD Ambush
BFG AT's
aFe stage II with pro guard 7
Edge Juice w/ Attitude
Rockford, pioneer, kicker, polk
5" Turbo back from farmboy
Foil delete
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CB

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If you can cut a massive hole in your own fender, I'd say your the DIYOTM. I'd be ****ting myself that something would go wrong.
made my day
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post #2 of 19 Old 12-25-2007, 05:23 PM
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5" is over kill unless your pushing major power, I run 4" into 5" with no problems..... and it sounds good too....
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post #3 of 19 Old 12-25-2007, 05:25 PM
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ya 4 inch all the way!

-Josh

2008 2500 LMM- Deleted, Blocked, Fueled, & Tuned by:
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post #4 of 19 Old 12-25-2007, 05:29 PM
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4 inch is all you need , the biggest problem with the 5 inch is clearance , every 5 inch kit ive installed it has been a hassle to keep it from rubbing everything under the truck, stay with 4 inch

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post #5 of 19 Old 12-26-2007, 04:27 AM
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If you have a hitch in the bed the 5" is a pain. If I had to do it again I would do 4" in a heartbeat a lot easier to install.

Pat

2000 F250 Carpenter's Union local 2214 LOOKING FOR SIDE JOBS

Mac intake,5" exhaust with6" tip,Zoodad,foil delete, ts chip, WW

96 E350 bad trans mod NO MORE.
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post #6 of 19 Old 12-26-2007, 10:12 PM Thread Starter
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is there a big difference in performance? and would it be smart to have the exhaust installed with the chip? it looks like im going with a 4" Banks

Joe

White 2002 F350 7.3


Pinch weld covers
Amp steps
KMC XD Ambush
BFG AT's
aFe stage II with pro guard 7
Edge Juice w/ Attitude
Rockford, pioneer, kicker, polk
5" Turbo back from farmboy
Foil delete
08 vent badges
CB

Quote:
Originally Posted by AvroAero View Post
If you can cut a massive hole in your own fender, I'd say your the DIYOTM. I'd be ****ting myself that something would go wrong.
made my day
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post #7 of 19 Old 12-26-2007, 10:35 PM
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Just two things.

1) Why would you spend the money on the banks when it is over $100 cheaper for the other brands?

2) 5" is not necessary to make big power. The big power guys running the turbos that use the hypermax mounting kits use a 3.5" down pipe. I am not a member of the 500 club yet, but I will be and it will be with a 3.5" DP to 4" intermediate piping to a 5" single stack.

Keep Strokin'

Early 99 (Born on 11-20-98) F350 CC LWB 4X4
north of 480hp and south of 13.7sec
Bored with current setup

Sled Pull and Drag Racing Videos

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post #8 of 19 Old 12-26-2007, 10:53 PM
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strokin.... you are not part of the 500 club yet???

2002 F350 XLT 4X4 7.3L Auto, Reg Cab, 3.5" lift, 35" BFG ATs, 6637 Filter, 4" Exhaust with Cool Duals, TN Turbo and high flow outlet, Fass fuel pump, regulated return with fuel bowl delete, 6.0L IC, SS HPX, DP tuner 40T 80E 120R, Gauges, 2005 Headlights and Grill

Next: Hybrids and new tunes
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post #9 of 19 Old 12-26-2007, 11:11 PM
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Are you the same Mr. Bob from PSN?

I will be the next time I dyno, right after Jody live tunes this pig in Feb.

Early 99 (Born on 11-20-98) F350 CC LWB 4X4
north of 480hp and south of 13.7sec
Bored with current setup

Sled Pull and Drag Racing Videos

<><
Family of 5 saved by Grace.....

Sponsored by Left Coast Diesel in Concord, Ca

Anything BUT Conservative Performance
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post #10 of 19 Old 12-26-2007, 11:12 PM
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Thats me

Did my signature give me away????

2002 F350 XLT 4X4 7.3L Auto, Reg Cab, 3.5" lift, 35" BFG ATs, 6637 Filter, 4" Exhaust with Cool Duals, TN Turbo and high flow outlet, Fass fuel pump, regulated return with fuel bowl delete, 6.0L IC, SS HPX, DP tuner 40T 80E 120R, Gauges, 2005 Headlights and Grill

Next: Hybrids and new tunes
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