Kennedy or Duramax tuning? - Chevy and GMC Duramax Diesel Forum
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post #1 of 15 (permalink) Old 01-16-2019, 06:51 AM Thread Starter
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Kennedy or Duramax tuning?

I'm getting ready to order a lift pump from Kennedy Diesel and noticed he also offers tuning. I'm in the market for a tuner and was going to go with duramaxtuner.com but wanted to give Kennedy a look first. Any thoughts about differences between the two? Thanks.

2007 chevy 2500HD (LBZ)
4WD CCSB, 6in RCD lift
Toyo 295/70r18
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post #2 of 15 (permalink) Old 01-23-2019, 10:39 PM
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If your deleting anything like your egr then Kennedy would be the better choice.
If your not deleting/blocking the egr then flip a coin.
You also have MotorOps which I just switched to after thanksgiving, best tune I’ve had to date with decent power and better mileage.

ATP had the best power, Rob likes to add more injector timing than most, mileage was a little lower but power was great.
Our fuel quality has dropped over the last 6 years and with that higher injector timing my mileage started to really suffer, 14 6/2012 down to high 10’s 6/2017.

With Ridge Runner tunes power was good my mileage was just a little better around 11.5 -12 and had a little less timing.
Motor Ops came to the rescue and built me a tune with less timing for me at my request, power is pretty good, not as good as ATP and RR but my mileage increased now around 13.5.
Putting my stock cat back on to get rid of the raunchy exhaust fumes also helped with mileage.

Dan
2007.5 GMC Sierra 3500 SRW L.B."BLACK" C.C. 4X4 LMM Z71
DIY stock airbox mod, aFe ProGuard 7, OEM drop-in
EFILive ECM ATP - Heavy Tow Tune with Turbo Brake.
EFILive TCM Duramax Tuner
DHD Cold Side High Flow Intake Pipe
DHD PCV Re-Route
AirDog 4G100

2007 Yukon Denail "BLACK" 6.2 gasser
DIY stock AirBox Mod, K&N, Airaid intake, EFILive TCM only tuning
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post #3 of 15 (permalink) Old 01-24-2019, 09:53 PM Thread Starter
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I think the only other differences are price and convenience as a result of using the ECM instead of an autocal.

2007 chevy 2500HD (LBZ)
4WD CCSB, 6in RCD lift
Toyo 295/70r18
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post #4 of 15 (permalink) Old 01-25-2019, 09:13 PM
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Going Kennedy you have to remove your ECM and ship it to get tunes loaded on it, then it gets shipped back with tunes, re-install your ECM, you truck is down during this time.

AutoCal tuning most of the tuners send you a AutoCal with tunes loaded on it, plug and play downtime maybe 5 minutes.

Pretty much everyone that has Kennedy tunes are happy.
If you need any changes with your tunes even tire size changes, repeat above.

With AutoCal any changes you call the tuner they’ll email you the changes, you load the changes on your AC then plugin and play.

I think Kennedy started doing tunes thru email providing you have a AutoCal and a vin license, this you’ll have to check on prices.

Dan
2007.5 GMC Sierra 3500 SRW L.B."BLACK" C.C. 4X4 LMM Z71
DIY stock airbox mod, aFe ProGuard 7, OEM drop-in
EFILive ECM ATP - Heavy Tow Tune with Turbo Brake.
EFILive TCM Duramax Tuner
DHD Cold Side High Flow Intake Pipe
DHD PCV Re-Route
AirDog 4G100

2007 Yukon Denail "BLACK" 6.2 gasser
DIY stock AirBox Mod, K&N, Airaid intake, EFILive TCM only tuning

Last edited by D_R_C; 01-25-2019 at 09:27 PM.
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post #5 of 15 (permalink) Old 01-26-2019, 04:17 AM Thread Starter
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I think you're right. Kennedy does offer tunes via email if the end user has the required support equipment. Definitely a great option to take a look at for someone who has a Autocal/V2 with vin Lic.

2007 chevy 2500HD (LBZ)
4WD CCSB, 6in RCD lift
Toyo 295/70r18
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post #6 of 15 (permalink) Old 01-27-2019, 03:26 PM
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You can get Kennedy Tuning with an autocal. That is the route I went with. Kennedy just does one tune, but he will customize it to your liking. Not many people will be swapping around tunes. I have his tuning an have been pretty happy with it. I have been having far less regens than before. You can email John Kennedy and he will answer your questions.

2016 GMC Sierra 2500HD Denali
Extang Blackmax Tonneau
Weathertech floor mats and mud flaps
X-pel clear bra
295/60-20 Toyo Open Country A/T II
Custom EFILive tuning by Kennedy Diesel
Kryponite UCA and Bilstein 5100s

SOLD 2004 GMC Sierra LB7
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post #7 of 15 (permalink) Old 01-27-2019, 03:46 PM Thread Starter
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Quote:
Originally Posted by ob_1jr View Post
You can get Kennedy Tuning with an autocal. That is the route I went with. Kennedy just does one tune, but he will customize it to your liking. Not many people will be swapping around tunes. I have his tuning an have been pretty happy with it. I have been having far less regens than before. You can email John Kennedy and he will answer your questions.
I assume you bought the autocal/v2 from EFI Live before purchasing the tune from Kennedy? I checked his website and didn't notice he offered an autocal w/single tune package. Only ECM tune packages.

2007 chevy 2500HD (LBZ)
4WD CCSB, 6in RCD lift
Toyo 295/70r18
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post #8 of 15 (permalink) Old 01-27-2019, 07:14 PM
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Shoot John an email and he can answer all your questions.

2006 Express 3500 Ext. 4" Turbo Back Exhaust, bye bye kitty and ruffler. EFI Live. Custom made air intake with dry Aem filter. TDK bumper.
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post #9 of 15 (permalink) Old 01-27-2019, 08:07 PM
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Quote:
Originally Posted by DaveDiesel View Post
I assume you bought the autocal/v2 from EFI Live before purchasing the tune from Kennedy?
Not how it works. You buy either the Autocal or V2 from the Tuner, and it comes with the VIN license for the tune, which is sent via Email.

2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite Air...EFI'd by Rob
2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite Air

Use-ta Haves 2006-6.0 3500 WT DRW ExCab Flatbed, 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab
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post #10 of 15 (permalink) Old 01-28-2019, 04:31 AM
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Quote:
Originally Posted by DaveDiesel View Post
I assume you bought the autocal/v2 from EFI Live before purchasing the tune from Kennedy? I checked his website and didn't notice he offered an autocal w/single tune package. Only ECM tune packages.
No, when I bought my package from him he sent an autocal with the tuning on it and instructions on how to load. Email or call John and he will explain it to you. It is pretty easy and he will answer your questions.

2016 GMC Sierra 2500HD Denali
Extang Blackmax Tonneau
Weathertech floor mats and mud flaps
X-pel clear bra
295/60-20 Toyo Open Country A/T II
Custom EFILive tuning by Kennedy Diesel
Kryponite UCA and Bilstein 5100s

SOLD 2004 GMC Sierra LB7
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