Straight Pipe - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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post #1 of 15 Old 06-21-2009, 04:16 PM Thread Starter
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Straight Pipe

Hi, I have the banks monster exhaust system on my truck. I've been told by many people to take the cat off and put a pipe in between. The dealership said some bull**** about back pressure but I had a feeling that they didn't know what they were talking about. So should I straight pipe it? What's the most affordable solution to go with? What are the benefits?
(I can't afford much right now haha)

"It's not leaking oil, it's sweating power!"

Pat

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post #2 of 15 Old 06-21-2009, 04:21 PM
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I would straight pipe it! Mines been straight piped since the day I got it. There are a few companies that make cat delete pipes or you could get a muffler shop to make you one.
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post #3 of 15 Old 06-21-2009, 04:38 PM
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I got one from Pure Diesel Performance, got it for about $65 shipped. I would buy an actual cat delete instead of just a "pipe" in between, because you can put the cat back in place with this if you need to.


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post #4 of 15 Old 06-21-2009, 04:45 PM
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post #5 of 15 Old 06-21-2009, 04:51 PM Thread Starter
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Can somebody take me to a website? I really don't want to order the wrong sized one for the banks exhaust.

"It's not leaking oil, it's sweating power!"

Pat

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Banks Monster Exhaust Straight Piped
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post #6 of 15 Old 06-21-2009, 04:52 PM
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Quote:
Originally Posted by v8Stroker View Post
Can somebody take me to a website? I really don't want to order the wrong sized one for the banks exhaust.
what size is it 3.5, 4, 5 ????
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post #7 of 15 Old 06-21-2009, 05:20 PM
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this is the one i have, went in quick...( if you have a 4", this is it )

03-06+ Ford 6.0L Powerstroke Diesel Cat Delete Pipe
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post #8 of 15 Old 06-21-2009, 05:23 PM
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Quote:
Originally Posted by v8Stroker View Post
Hi, I have the banks monster exhaust system on my truck. I've been told by many people to take the cat off and put a pipe in between. The dealership said some bull**** about back pressure but I had a feeling that they didn't know what they were talking about. So should I straight pipe it? What's the most affordable solution to go with? What are the benefits?
(I can't afford much right now haha)
The TURBO makes 14psi of backpressure and diesels don't need backpressure anyway.

Old Truck: 00 F350 XLT DRW: basic first few mods. S&B, 4" straight pipe, gauges, CCV, EBPV and Wastegate line deletes, LED Sills, sweet custom headlights, smoked cab lights, Ventshades, Tint.
Traded in at 196k miles.

"Brand Newish" Truck: 02 Chevy S10 2.2L 5sp. Reg cab 4x2. Badass custom made shifter, foglights, 20% tint, AVS Vent-shades, Stock Intake mods, Electric Fan conversion .
~ 95k miles.
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post #9 of 15 Old 06-21-2009, 05:55 PM
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for the banks exhaust they have you cut the cat about a foot short to make it fit into their pipe which is BS but you have to fet a piece of pipe to put between the two sections of pipe. Any 4 inch muffler delete should be fine though. I wound up having to get 3.5 inch pipe and it fit inside the two banks pieces (of crap) and filling the gap left by the cat. then i just tightened the clamps they had. I would just take it to a muffler shop and get a piece of pipe that goes from where the cat begins to the muffler ends. This way it will be really easy to switch if you have inspections. just might take a little bit of time to find a shop. when I called around they were all real strict on the epa regulations and I didnt have any luck.

2006 F250 CCSB

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post #10 of 15 Old 06-21-2009, 10:36 PM
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When I swapped my exhaust to the 4" I also removed the cat with the delete pipe. A couple weeks ago I put the cat back in since it was going to the dealer for warranty work and the power loss was noticeable.

As soon as I got it home the cat came back out.

2005 F250 6.0L 4X4 Lariat
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BulletProof EGR cooler, CAT EC-1 coolant, Coolant filter, Blue spring fuel regulator, Atlas 40 FICM


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