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Deleting the 6.7: A guide to making it run right!

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Old 09-29-2010, 08:31 PM
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nice writeup Blake!! I was looking at my dpf..it's welded to the muffler?? bought it that way...I wonder why its welded & not clamped?.... the hanger is still on the dpf, somebody put a hanger from the muffler up to the rubber grommet....
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Old 10-04-2010, 06:15 PM
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Does anybody have any dyno numbers (or know of anyone who does) after doing the deletes and adding a programmer like the Smarty or H&S?

The dyno numbers for the stock trucks I have seen are sad. They are much lower than the 5.9 CR.

I am trying to decide on getting a 6.7 with deletes or hold out for a 5.9 which I know is a proven trouble free power maker.

Any thoughts on that one.....
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Old 10-04-2010, 06:18 PM
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Originally Posted by DC89SSP View Post
Does anybody have any dyno numbers (or know of anyone who does) after doing the deletes and adding a programmer like the Smarty or H&S?

The dyno numbers for the stock trucks I have seen are sad. They are much lower than the 5.9 CR.

I am trying to decide on getting a 6.7 with deletes or hold out for a 5.9 which I know is a proven trouble free power maker.

Any thoughts on that one.....
Where are you finding these numbers. The 6.7 is known to put down more power, and arguably, more usable power via the 68RE that the 5.9.

Both in stock clothes that is.


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Old 10-04-2010, 06:36 PM
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I confess unfortunately they are in magazines. I haven't seen many people like us who dynoed their 6.7 trucks stock or with the usual bolt-ons.

The mags usually show a smogged 6.7 putting down about 480 rwft lbs and a 5.9 putting down 570 or so (which makes no sense given the displacement diff). The horsepower they show is close between the two.

I drove a 6.7 G56 on Saturday and I coudln't tell any diff from a 5.9 power wise.

Now that 6.7 was stock. The 5.9 was stock but not hampered with smog stuff.
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Old 10-04-2010, 06:42 PM
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http://www.hsperformance.com/?page_id=5262

Id trust these guys

Where the 6.7 really shines is when you load it down and work the 68RE and the exhaust brake.
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Old 10-04-2010, 06:42 PM
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Thanks for the welcome. I am coming from the PowerStroke world.
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Old 10-04-2010, 06:45 PM
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Originally Posted by Blake Clark View Post
http://www.hsperformance.com/?page_id=5262

Id trust these guys

Where the 6.7 really shines is when you load it down and work the 68RE and the exhaust brake.
Yeah I saw their results but haven't seen them duplicated by anone in the real world. Their is another post on here (lloks like a diesel shop) saying that they usually see a little over 400 instead of 490.

I am looking at the G56 but it does have the brake.
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Old 10-04-2010, 06:47 PM
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Originally Posted by DC89SSP View Post
I am looking at the G56 but it does have the brake.
Talk with member got_soot, he has the G56 deleted and can give you some insight.
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Old 10-04-2010, 06:50 PM
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Thanks I will search and send him a PM.

Sorry for my bad spelling above.
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Old 10-05-2010, 11:14 PM
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Blake,

I talked to Got_Soot. Really nice guy. Answered the questions I had.

I may be a 6.7 owner soon.
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Old 10-06-2010, 07:42 AM
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Originally Posted by DC89SSP View Post
Blake,

I talked to Got_Soot. Really nice guy. Answered the questions I had.

I may be a 6.7 owner soon.
Good to hear. If you need anything feel free to ask.
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Old 10-09-2010, 02:24 PM
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Blake,

I am looking at one that is bone stock with 120k miles. Would you worry about damage that the EGR has done to the motor (soot in intake)?

My plan is to delete asap if I get it.
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Old 10-09-2010, 04:35 PM
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No, if it runs well and you will be deleting I wouldnt worry.

The IMO soot is more detrimental to the turbo than the engine itself.

Check the oil for signs of fuel wash. Check make sure the exhaust brake works, the tow haul downshifts firmly and no CEL's, stored or visible. Take a look at the Bluetec system and look for tattletales of being deleted. If all that checks out, run it through your standard would I buy this inspection and your good to go.
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Old 10-09-2010, 05:07 PM
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It is def bone stock. No deletes. No check engine light or service soon light. Looks to have been worked very light. There is still a shiney finish on the gooseneck ball and the spray in bedliner covers a bed with almost no dents. usually at least the wheel wells are dented in.

There is an oil change sticker in the windshield so I don't think I can learn much about that.

Tranny works great (6 speed!)

I will ask about exhaust break.
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Old 10-09-2010, 05:40 PM
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Looks like you have a winner.
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