Who all does them?
Colorado Duramax tuning options
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rickdlance
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That oil wouldnt be my first choice, but I have been using motol in my built and boosted brz for all sorts of fluids and oils. I'd say go for it. I'd trust their recommendations. For reference i have no monetary incentives from them, I just run their 75w90 gear oil in my diff and trans, their 660 brake fluid, and their 6100 10w40 in my brz and have had 0 issues and the labs always come back with good numbers.Yea it’s definitely a dexos2 compliant oil
Motul: engine oils, lubricants, car and motorcycle care
Explore all Motul products, find the perfect oil for your engine, durable and high-performance products for all cars, motorcycles, heavy-duty vehicles, and bicycles.www.motul.com
I ran in it my 2013 STI as well.
So is the consensus to go with Green Diesel Engineering over the Duramax Tuner? Been reading through this thread….
Just purchased my diesel 3 weeks ago. 2021 ZR2 29K on it.
Also one other question.
When you flash your truck does it save a copy of the original tune?
Just purchased my diesel 3 weeks ago. 2021 ZR2 29K on it.
Also one other question.
When you flash your truck does it save a copy of the original tune?
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860 Posts
I should have just got a wrx but decided that it wasn't smart to rallycross a car owned by the bank. So i got a brz and decided to autocross the banks car. Currently researching for a spreadsheet. I'm thinking about lifting it, putting an offroad suspension on it, and stuffing the widest short suv AT tires on it and rally it. 235/55/17 look like they clear the suspension but i dont know if they will be able to go lock to lock.
I have them and highly recommend them. It isnt like ecutek where if you dont save it before, it is gone. Both your ecu and tcu are saved on the flasher and you have to pull them from the device to send to them so you will have a copy unless you delete it.
I used all Cobb stuff but with that said. Thanks for your responses. I just ordered the Kit. Anxious to see how it does.
Sold the STI to get a truck for work and bought a Tacoma. Drove it 62K but the fuel mileage on windy hilly travel days in Kansas and MO was killing me. 15MPG. Thing would downshift to 4th and be turning 3K RPM to make the hills. The seats were narrow and the bolsters high so it was killing my hips. 3K miles in the 21 Colorado ZR2 and I feel like a new person with no hip issues at all. And the truck just pulls the hills in the wind without shifting. Love it so far.
Let the mods begin….
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RPT1 (RPF1 for trucks) don't come in our stud pattern, but putting on an aftermarket intake obviously removes the resanotor on the intake and gives more turbo sounds.Let the mods begin….
Just placed an order. Looking forward to it.
dieseldrax I read in a post somewhere that you quit using the Green Diesel tune. Is that still the case?
Also what was the issue with the transmission shift in L or something you discovered after the tune that wasn’t there stock?
Thanks
I'm currently running both the engine and trans tunes. After the initial flash of the engine tune the engine felt very unrefined and rough under acceleration so I went back to stock and posted about it on the Colorado Diesel forum. GDE reached out and wanted me to reinstall their tune and collect logs so they could figure out what was going on, but when I reinstalled it there was no problem so it was like some part of the tune got corrupted when it was being written to the ECM the first time.
The trans tune concern/issue was that my stock trans tune didn't enable grade braking in L mode and the manual backed this up. The GDE trans tune enables it, which is unfortunate. I like to control if and when my trans downshifts in Tow/Haul so I switch to L and manually downshift, but after installing the tunes and then taking a drive in a hilly area I discovered it started grade braking in L when it never did before. I don't know know if this was an artifact of the bad initial flash or what, but I feel like L mode works more properly now and doesn't rev to the moon with grade braking like it was doing initially. I didn't have a trailer worthy of using Tow/Haul again until just recently, but we haven't put many miles behind us with it yet for me to really test it out.
Currently, I'm happy with the GDE tunes.
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I finally ordered the GDE tune for my truck. It’s on sale till tomorrow. Can’t wait to see what I’ve been missing.
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I finally broke down and ordered the GDE tune as well, after 6 years of griping about my soft 2-3 shift. Had a few questions, and they were friendly and responsive. Ordered over the weekend and had it Thursday, emailed the tune files and had theirs back Friday morning. Went right on (following the directions carefully just in case), and it's quite a difference. For the record, we have my 2017 Canyon diesel and my wife's 2020 Colorado V6. They say there's more power, which might be - it feels like a bit more - but the trans tune is night and day. It almost feels like the gasser trans is in there - it revs a bit faster, but the shifts are firm and feels like it's grabbing much better now. It will also hold a gear all the way to 1300rpm if you're just cruising along.
I wish GM would just buy a license to this from GDE and offer it up to everyone. It would take all the people that don't like the truck's behavior and turn them into believers and future customers.
I wish GM would just buy a license to this from GDE and offer it up to everyone. It would take all the people that don't like the truck's behavior and turn them into believers and future customers.
I can confirm everything he said. Just installed my tune and damn, should have done it sooner. This is how the truck should have come.
I run it and it's great. Motul is awesome overall and being able to buy 5L at a time is solid.
I've been using it since 3900 miles
Only difference is I'm running the 5-40
Now that I'm out of warranty I think I'll be switching over to the Shell Rotela.
Yep. Great stuff. Why switch to Rotella?
Was just thinking it would be nice to snag from the local store instead of order only.
Great oil tho
Rotella T6 and most any other synthetic 5w40 CK-4 diesel oil are much better oils for diesel engines than dexos2/ACEA C3 oils which are light duty oils. UOA with Rotella has always come back with much better results than dexos2.
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Just bit on the GDE tune for my 2019 - excited to see how it feels!
At ~40k miles now and just switched over to Rotella t6 for the oil.
At ~40k miles now and just switched over to Rotella t6 for the oil.
Looking forward to hearing if you like it as much as everyone else.
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