New OBS owner...I love this thing - 21.5 MPG! - Ford Powerstroke Diesel Forum
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Old 01-12-2012, 09:59 AM
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New OBS owner...I love this thing - 21.5 MPG!

Hey folks, just wanted to say thanks to all of you guys for taking the time to explain all the little things on these boards. I have learned a lot, and hope I can contribute sometime down the road.

I'm super pumped though on the MPG's with this truck (97 crew cab, 2wd short bed w/ 3.55's)...If Im good on the gas pedal and cruise at 65-67 mph on the highway I get 21.5 mpgs (Ive calculated over 3 tanks of fuel), which is awesome!

This truck has no mods, and yes I drive like an old man, but still thats pretty good, and I use the silver bottle of diesel additive.
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Old 01-12-2012, 10:00 AM
Can you hear the derail??

 

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just imagine if you did the intake, down pipe, and straight pipe it, bet you could get up to atleast 24-26
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Old 01-12-2012, 10:05 AM
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Im probably gonna stay away from the intake, because in texas, and where I live, it is ridiculously dusty, and I've heard about some instances where that dust works its way into the turbo..

Where can I get the down pipe and straight pipe done? Is the down pipe a DIY thing. What would this typically cost?

Thanks and man, you got some great lookin trucks
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Old 01-12-2012, 10:11 AM
Can you hear the derail??

 

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you can do them yourself actually, the down pipe i ordered from complete performance, cptrucks.com, and he can get you the straight pipe too, if your area is dustier than you would like i hpe you either keep running the stock filter not a replacement one, or if you do the diy filter just put aa dust cover over it, it will still open up better than that stock restrictive air box
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Old 01-12-2012, 10:13 AM
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Downpipe is about $100; the old flat-pancake one has to be cut to remove, and a minor body mod made.

What you've heard about the intake is probaby cf. the K&N, which is known to let too much through. The NAPA 6637 (or its Donaldson, Baldwin, etc. counterparts) is safe to use, and works in conjuction with the exhaust mods to really let the truck breathe.

Shoot, we get 21-22 bone stock and that's with a long bed 4x4. That's also with a 5-speed and 3.55s. Is yours an automatic? That'll cost a little in the MPG department.
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Old 01-12-2012, 10:17 AM
Can you hear the derail??

 

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ive hit 26 in my scsb 3" down pipe, diy intake, straight pipe stock diameter, and stacks with a race tune from my old edge
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Old 01-12-2012, 10:34 AM
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Quote:
Originally Posted by madpogue View Post
Downpipe is about $100; the old flat-pancake one has to be cut to remove, and a minor body mod made.

What you've heard about the intake is probaby cf. the K&N, which is known to let too much through. The NAPA 6637 (or its Donaldson, Baldwin, etc. counterparts) is safe to use, and works in conjuction with the exhaust mods to really let the truck breathe.

Shoot, we get 21-22 bone stock and that's with a long bed 4x4. That's also with a 5-speed and 3.55s. Is yours an automatic? That'll cost a little in the MPG department.
Mine is an automatic. What does cf mean?
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Old 01-12-2012, 10:41 AM
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Honestly i've heard of my turbo's getting dusted with the stock filter set-up than with the DIY intake. The stockers tend to leak pretty bad and let air in unfiltered, where as the 6637 only has the seal onto the pipe which isn't a problem at all.
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Old 01-12-2012, 10:50 AM
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Originally Posted by JD3020 View Post
Honestly i've heard of my turbo's getting dusted with the stock filter set-up than with the DIY intake. The stockers tend to leak pretty bad and let air in unfiltered, where as the 6637 only has the seal onto the pipe which isn't a problem at all.
You are correct. The stock airbox leaves a bit to be desired.
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Old 01-12-2012, 11:10 AM
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Quote:
Originally Posted by trailerjack View Post
What does cf mean?
"In reference to" - proofreading shorthand, or some such...

And indeed, I've heard the same about the stock airbox, esp. given what a PITA it is to get the cover on straight (and how easy it could be to get it wrong).
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