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post #1 of 12 Old 12-13-2009, 09:02 PM Thread Starter
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Results from 6637 air filter and straight pipee

What advantages and gains might I get from adding the DIY 6637 filter and a straight pipe in the stock exhaust of my 2000 7.3? Thanks for any info, Fred
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post #2 of 12 Old 12-13-2009, 09:09 PM
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More power, more mileage, more sound

Zach
2000/2006ish Ford F-250 Larryette 7.3 Powerstroke 4x4
5" Sewer Pipe Exhaust (video clip), DIY 6637 Intake, Wicked Wheel'd, De-foiled, Missing EBPV, Edge Juice with Attitude, Few leaves added here and there, 35" BFGs, 16x10 Eagle Alloys, Alpine W200

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post #3 of 12 Old 12-13-2009, 09:10 PM
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more air intake, less restriction on exhaust side

Keep in mind that any engine is a big air pump.....more effeciant air in, more effeciant air out...overall, moves more air more effeciantly= more hp/tq.....

Chuck
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post #4 of 12 Old 12-13-2009, 09:13 PM
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these fellas hit the nail on the head

And the only way you would get better mileage is if you can keep your foot out of it once you hear it straight piped probably wont happen!!

Sam


2005 F350 King Ranch CC DRW Insight Leveled 4" MBRP Straight Pipe Tinted

'99 F250 - Sold
'99 Cummins - Sold
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post #5 of 12 Old 12-13-2009, 09:13 PM Thread Starter
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One of the mod section reports I read were that the straight pipe would flow about 70% of what the 4" complete system would so I figured I would start with the air filter and straight pipe stock exhaust set up until summer then the 4"....any idea on the increase amount in mpg? Thanks for the answer, Fred
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post #6 of 12 Old 12-13-2009, 09:18 PM Thread Starter
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I checked out your video clip Zaairman it sounds nice.....what system is it and was installation easy? Fred
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post #7 of 12 Old 12-13-2009, 09:24 PM
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raul has a pretty cheap 4" TB system. Its not the most simple set up but it works.

Chip it.
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post #8 of 12 Old 12-14-2009, 01:35 AM
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4" pipe wont do much over 3". The outlet on our turbos is like 2 3/4". Stepping up to 4" exhaust might let the exhaust gasses expand a little letting a little more gas out, but you will notice the most by ditching the muffler.

'05 6.0 FX4 Lariat DRW:ARP, OEM HG's, Fully Updated, 03 turbo, Warren 155/stock, Pillar Guages(Boost, TFT, EGT, Oil Pressure), Fuel Pressure, Scan Guage 2, 6.4 banjos, Blue spring, MBRP straight pipe, SCT with Nate's tunes, Zoodad, DIY CCV Mod, coolant filter, T6, Final Charge ELC, Strategy VXCF4, Eco tuned FICM
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post #9 of 12 Old 12-14-2009, 06:22 AM
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Quote:
Originally Posted by Fred Swanson View Post
I checked out your video clip Zaairman it sounds nice.....what system is it and was installation easy? Fred
That's the Farm Boys Diesel 5" budget system. Yes, very easy to install. Hardest part about it was we broke the bolt on the V band clamp on the back of the turbo for the down pipe and spent all afternoon running around trying to find that.

Zach
2000/2006ish Ford F-250 Larryette 7.3 Powerstroke 4x4
5" Sewer Pipe Exhaust (video clip), DIY 6637 Intake, Wicked Wheel'd, De-foiled, Missing EBPV, Edge Juice with Attitude, Few leaves added here and there, 35" BFGs, 16x10 Eagle Alloys, Alpine W200

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post #10 of 12 Old 12-14-2009, 11:04 AM
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The 6637 on my truck will be replaced with a ford AIS. The dang thing is freaking loud in the cab. It's nice when you're alone and on shorter trips but trying to talk to people in the cab and on long towing trips it is just too loud for me.

I noticed a seat of pants power increase with the 6637 for sure, I hope to keep that with the AIS.

2000 F350 4wd CC SB PSD
Normal mods plus gauges and PHP chip
Lowered to F250 height
Stock tire size, looks stock.

18' 10k# equipment trailer
30' Travel Trailer 7500#
Kioti CK30 tractor
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