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GMC 2500HD 6.0L Mods...who's done what?

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Old 09-05-2016, 06:57 PM
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Call Justin at Blackbear performance and get a custom tune.

Have him send you the date logger to drive around with and get real world data. with the drive by wire you will be amazed with how much throttle the computer pulls out for " torque management" Made a huge difference in my old 6.0
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Old 09-06-2016, 12:15 PM
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Originally Posted by RogerThat99
Any updates on this thread? I have an 04 GMC 6.0L. It is just an old work truck, but would be great to get better mileage and / or more power.
biggest gains are:
91 octane Tune
efans from the 05 and up
Better filter, cold air kit (plastic tube, not chrome or stainless)
Tires aired all the way up
muffler helps some
65mph is the sweet spot with 3.73 gears
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Old 09-06-2016, 12:43 PM
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Originally Posted by obnoxus
Call Justin at Blackbear performance and get a custom tune.

Have him send you the date logger to drive around with and get real world data. with the drive by wire you will be amazed with how much throttle the computer pulls out for " torque management" Made a huge difference in my old 6.0
I agree go with Blackbear or Diablew. Both collect data first and then do the tune. Diablew seems to have much faster customer service.
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Old 09-06-2016, 01:37 PM
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I too wanted a bit more power from my 6.0L gen III....this was my solution.

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Old 09-06-2016, 02:09 PM
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Originally Posted by wasted income
i too wanted a bit more power from my 6.0l gen iii....this was my solution.
nice!
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Old 06-24-2017, 12:41 PM
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Originally Posted by Wally
Dont go the programmer route...do a custome tune like from Nelson or Westers or waitforme etc.... And if the motor/trans is stock dont remove more then 50% of the torque management on it....that alone will wake up the motor....most guys after this are able to smoke the tires off the line for as long as they want The programmer can also do a dual tune on these trucks where your tow/haul button can activate a different program! Like for a 93 octane tune
The throttle body spacers are for the most part worthless...most time all they do is make an annoying whistling noise with no real improvments....some say they get more Mpg....but i never got anything out of the one i tried....and later sold on ebay....and another buddy of mine did the same thing...even after me telling him it wont do anything.
I have a 2009 2500 hd GMC and looking for alittle more power , So what is a custome tune consist, I thought of a exhaust kit.
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Old 06-26-2017, 08:39 AM
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Custom tunes from black bear are usually about 600$
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