2016 duramax

eclipse1966 · Dec 12, 2017

my truck is still under warranty so wondering if any of you are running a performance tuner and if so what brand.

Tks

the_real_wild1 · Dec 12, 2017

Install a tuner and it will kill your warranty. I have the same truck. Bought extended warranty. I won't touch anything until the warranty is over. At that point it will get traded in if I have any issues. I know there have been guys on the duramax forum that had warranty rejected from a tuner that didn't add any power.

eclipse1966 · Dec 12, 2017

thats what I feared. Have a friend that insisted that would not be the case so thanks for clearing that up. Awesome truck just not a fan how the transmission shifts compared to my F350 with a tuner.

the_real_wild1 said:
Install a tuner and it will kill your warranty. I have the same truck. Bought extended warranty. I won't touch anything until the warranty is over. At that point it will get traded in if I have any issues. I know there have been guys on the duramax forum that had warranty rejected from a tuner that didn't add any power.

the_real_wild1 · Dec 12, 2017

eclipse1966 said:
thats what I feared. Have a friend that insisted that would not be the case so thanks for clearing that up. Awesome truck just not a fan how the transmission shifts compared to my F350 with a tuner.

Really? What is it doing? Mine has been good so far. Only 50,000km on it though.

Bnorth · Dec 12, 2017

Just spray some nitrous at it Dennis I can't see that voiding warranty LOL

kovs · Dec 12, 2017

I’d Spend the money on nicktane adapter and better fuel filter for longevity and drive it. Donaldson makes a fuel/water filter 3 micron # P553203 $20 - Napa. Stock is 6 micron and $45-50 ( rockauto for ac delco. Or first filter carries a replacement as well )
I bought from jandy diesel on eBay. Got the bleeder screw and shim kit all as one

tstams · Dec 12, 2017

I did a tune from coopers custom tuning only regret is that I didn’t do it sooner did it at (20,000) k way better fuel economy way better performance the motor isn’t choking itself. As for warranty you still have it just if they can prove the tuner caused it they will void that warranty claim. I also only ran a stock hp tune so I would not be pushing the limits of the stock components.

eclipse1966 · Dec 12, 2017

actually not the trucks fault. The Edge Tuner I had in the Ford was very sharp shifting like a shift kit whereas the duramax is more gradual which is normal. Just my preference to have the shifting more firm.

the_real_wild1 said:
Really? What is it doing? Mine has been good so far. Only 50,000km on it though.

eclipse1966 · Dec 12, 2017

LOL! Yup I will have it all hooked up before our next bush road ride and hit it while drifting around the corner

Bnorth said:
Just spray some nitrous at it Dennis I can't see that voiding warranty LOL

eclipse1966 · Dec 12, 2017

tks guys!!!!

kovs said:
I’d Spend the money on nicktane adapter and better fuel filter for longevity and drive it. Donaldson makes a fuel/water filter 3 micron # P553203 $20 - Napa. Stock is 6 micron and $45-50 ( rockauto for ac delco. Or first filter carries a replacement as well )
I bought from jandy diesel on eBay. Got the bleeder screw and shim kit all as one

tstams said:
I did a tune from coopers custom tuning only regret is that I didn’t do it sooner did it at (20,000) k way better fuel economy way better performance the motor isn’t choking itself. As for warranty you still have it just if they can prove the tuner caused it they will void that warranty claim. I also only ran a stock hp tune so I would not be pushing the limits of the stock components.

kovs · Dec 12, 2017

tstams said:
I did a tune from coopers custom tuning only regret is that I didnâ€™t do it sooner did it at (20,000) k way better fuel economy way better performance the motor isnâ€™t choking itself. As for warranty you still have it just if they can prove the tuner caused it they will void that warranty claim. I also only ran a stock hp tune so I would not be pushing the limits of the stock components.

Mind sharing a little more details on the tune and how it helped? Running empty the mpg is pretty good. Wouldn’t mind a little better tho empty or pulling
25 50 75 Hp tune?? Efi live or???
Thanks

the_real_wild1 · Dec 12, 2017

tstams said:
I did a tune from coopers custom tuning only regret is that I didn’t do it sooner did it at (20,000) k way better fuel economy way better performance the motor isn’t choking itself. As for warranty you still have it just if they can prove the tuner caused it they will void that warranty claim. I also only ran a stock hp tune so I would not be pushing the limits of the stock components.

They don't have to prove anything unless you take them to court and even then it is a fight. Lots of guys have already been through it. Most of the time Dealers are required to send in a snap shot now that will show if it has ever been tuned. Even if the truck is in for something unrelated. The only way you might get around it is to have the dealer install the tuner and then only take the truck back to them for repairs.

LBZ · Dec 12, 2017

My 16 gets pretty good mileage for stock. Only sucks when it regens, which isn't very often.
For the first time ever I will leave this truck stock till it's off warranty or the emissions gives me grief three times.

To the OP, without building the trans or tuning you will never find your truck will shift like a Ford. The Allison has a lot heavier parts in it with a lot of protection in the tuning to help keep it from piling up.

Merc63 · Dec 12, 2017

Why lower the stock fuel filter microns? These units don't have a lift pump, they operate on suction. 3 microns is enough to remove microscopic bacteria. Surely 6 microns is plenty for these applications. Too low would cause low flow And maybe strain the pump even more?

tex78 · Dec 12, 2017

Bnorth said:
Just spray some nitrous at it Dennis I can't see that voiding warranty LOL

U mean meth injection

Merc63 · Dec 12, 2017

LBZ said:
My 16 gets pretty good mileage for stock. Only sucks when it regens, which isn't very often.
For the first time ever I will leave this truck stock till it's off warranty or the emissions gives me grief three times.

To the OP, without building the trans or tuning you will never find your truck will shift like a Ford. The Allison has a lot heavier parts in it with a lot of protection in the tuning to help keep it from piling up.

Yes, it feels like the tuning of the TCM, they won't shift hard or downshift fast. I have an Allison in our pickup and peterbilt. The shifting is very similar feel wise, despite the application difference. These trans are built to last.

firstdoo · Dec 12, 2017

tstams said:
I did a tune from coopers custom tuning only regret is that I didn’t do it sooner did it at (20,000) k way better fuel economy way better performance the motor isn’t choking itself. As for warranty you still have it just if they can prove the tuner caused it they will void that warranty claim. I also only ran a stock hp tune so I would not be pushing the limits of the stock components.

What were you getting for fuel economy before and after tune (empty and loaded). My 15 3500srw is averaging 11-12.5 empty and 21-25 pulling 15000lbs. Truck is stock.

crossfire879 · Dec 12, 2017

the whole tuner dealer thing is a constant fight. the dealer will tell you they will honor the warranty but if you have a catastrophic failure, I can guarantee you they won't foot the bill for a 20 grand engine replacement. same with having to prove the tuner caused the issue, yes technically that's the case but the fight you will have to put up to pursue that just isn't worth it. lots of dealers won't even look at it once they see the tuner even if it's unrelated. bottom line is, if you want warranty don't f**kin touch it.

kovs · Dec 12, 2017

Most of the diesel guys I’ve talked to swear by good filtration that it pays off in long run for injector life.
Friend has 5.9 Cummins. Been running a cat 2 micron 1r-0750 ( same as Fass system filter ) truck has 430k original injectors.
In stock form the fuel system should not have any trouble even with fine filtration. Donaldson or cat Filters are rated for more flow than stock one in a push or pull system

ippielb · Dec 12, 2017

EFI Live with a DSP5 switch from a respectable tuner. Never look back, delete the DPF/EGR/DEF, enjoy the reliability, new power, and fuel economy.

2016 duramax

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