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post #1 of 7 Old 06-12-2012, 06:43 PM Thread Starter
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Sinister delete

Hey everyone. im a rig welder and I'm new to the 6.0 world. I was a cummins guy but sold my 2wd Duelly cause I needed the 4x4. So I got a good deal on a 03 lariat drw with 140k on it. I know it's got the sinister delete, air raid, bdp trams pan, and mbpr exhaust. But I guess it still has the cat and resonator. Should I delete? Not sure about the oil cooler just yet. I really want to get my mpgs way up. I'm all hwy miles for the most part but I want the power when I need it for hauling horses and travel trailers when needed. I'm wanting a cts but I wanna work my way to that. Any and all helpful info is greatly appreciated
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post #2 of 7 Old 06-12-2012, 06:48 PM
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Howdy and welcome to the ORG.

As a fellow 6.0L owner, the biggest thing I recommend is folks get a monitor in their trucks as soon as possible. That really is the only thing I feel is a required modification from factory, everything else can be done on an as required basis. I use an Edge Insight CS, about $100 less than the CTS with the only feature I can't have is the back up cammera.

Find out if the truck has ever been tuned, some times its ok, and some tuning will tear up the transmission. I can give you my recommendations and what I see MPG wise tuned and stock if you are interested.

Start reading up, and learning about your 6.0L. It can be a great motor, or a money pit, and it really boils down to how you drive and maintain it. Here's a thread to get you started. I've listed the various issues, and how to correct them.

Write Up: Bullet-Proofing the 6.0L PSD.

If you have any questions let us know.
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post #3 of 7 Old 06-12-2012, 06:58 PM Thread Starter
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Thax a bunch. I like the truck and my Gf loves it over the dodge. Just brownie points. Dumb question but how can I tell if it's been tuned? Don't really care about the b/u camera so I guess I'll save $100. I did read about the bullet proofing so I guess I can start on that. I did get a 3yr warranty that covers my motor and tranny an all lubricating mechanical parts. My main thing is getting my mpgs way up for starters. Is it wise to delete the cat? Another dumb question: what is the degas bottle??

03 f350 lariat drw 4x4
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post #4 of 7 Old 06-12-2012, 07:33 PM
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degas bottle is the new "radiator overflow and cap"
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post #5 of 7 Old 06-12-2012, 07:56 PM
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If it was tuned with a Banks or Edge, I don't believe it would show. Bully Dog will leave an artifact on your ECM, but you won't know it until you load up an SCT file. If it was done with an SCT, I wouldn't even worry about it, as SCT has the best track record with tuning the 6.0L.

I don't think you'll see much in mileage off just removing the CAT, it would drop EGTs down slightly though.

First step in mileage is keep your foot out of it, with the exception of a WOT run once or twice a week to get the turbo to fully cycle and get some air through the EGR system (breaks up the soot a bit). Don't baby the truck constantly, as the 6.0L needs to work to keep functioning, but don't race light-to-light.

Next is keeping up on service. Short cycle the oil and fuel filters a bit, and make sure you've got a good clean air filter (I still run the stock unit, best filtration out there bar none).

When the time comes to tune, only run a SCT flash tuner, and run the highest HP tune you are comfortable with for the best mileage. I saw a 10% gain over stock with my street file, and I see a 14-15% gain under my race file. Studded truck, and the street file is held back a bit to minimize smoke.
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post #6 of 7 Old 06-13-2012, 08:06 AM Thread Starter
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Ok. First off I have an air raid so I'm just gonna leave that for now. As far as the sct flash tuner what exactly does it do? I had a super hips programmer in my cummins but just messed with it once.

03 f350 lariat drw 4x4
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post #7 of 7 Old 06-13-2012, 09:30 AM Thread Starter
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Should I get an edge cts insight and sct? Which sct should I get?

03 f350 lariat drw 4x4
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