bboyce536

They've done the exact same things on mine. Steering gear helped some but made it worse in the wheel. They still have Pico readings they can't fix. Currently in a lemon law against GM. Hope they can fix yours. Mine is a 16 that started pretty much from day 1. My 14 and 15 were great but this 16 has assured these issues are real and do exist.

Bueller? Bueller?

Bringing thread back from dead. Had a 6.2/8 speed I wanted to tune, but instead had issues, and ended up trading for a 16 5.3. I had a 14 5.3 but man the 5.3 is hard to go back to. So sluggish and slow. Will be doing this E85 tune to my 5.3. What I wanna know in the stock 6.2 vs e85 tuned 5.3 graph is this...was the 6.2 not dynod in 5th while the 5.3 in 3rd? Would that not help the 6.2 read slightly higher as it is closer to the desirable 1.1 ratio? Just interested in how close I can get to my 6.2 driving dynamic. I can't stand how much throttle it takes to get this 5.3 moving...

So still not many 8 speed guys here. So who offers full tcm support? T87 module I believe? I wouldnt mind putting the camaro/corvette 'track' or 'sport' shift mapping just so these trucks don't cut power on every shift. Maybe even make the tow/haul a sport mode since I hardly tow. Wish I hadn't spent money on a Diablosport product had I known they had no eta or plan for the 8 speeds.

33x12.5s? Or a 275 width. Looking at getting some 305/55s for mine now that I bought a DD. Sorry to derail thread, continue.

Mine works now. I installed the ob tune as I initially had the oa tune. I actually feel a power difference as well this time which has me wondering if the tune even worked before. Had her up to 103 on the freeway last night to test if the speed limiter was still there. Now patiently awaiting TCM support...

Lifetime over 2100 miles on my 2015 6.2 4x4 is 18.4. I have a 2 mile drive to work otherwise I would bet my lifetime would be over 20 if it were actually able to warm up.

Just been emailing support. All they said about the adjustable parameters is " we'll have an update soon." It wouldn't be a big deal if they didn't claim that their product could do all these things for my specific vehicle, then not follow through. I got an exhaust for my truck and the whole reason I really spent the money for the tuner was to turn AFM off. Just frustrating.

Any luck? Diablosport has left me just waiting..

That was my issue initially. My truck had the update done already. I've tried again and it still won't let me adjust any parameters, just install the "Diablo Tune." Not happy about it.

I got my diablo intune the other day and was frustrated when it couldn't read my PCM, but after emailing support they were able to fix that. However, I installed the tune and it doesn't give me any adjustable parameters at all. After it installs the ECM tune the Intune just reboots. I emailed Diablo and they said thats normal. I'm kind of pissed about that as the main reason I bought it was for the throttle booster and AFM disable. Anyone else with a 6.2 able to adjust parameters other then just load a tune? BTW drove the truck and it felt exactly the same after the tune..

For those who have the 6.2, did you up your rev limit? I mean our engine is the same as the vettes and doesnt the vette run out to 6800? Just ordered my tuner, but not even sure I will be able to adjust WOT shift points anyway without trans support.

Remember most stations have only 1 STP (submersible turbine pump) per grade. So depending on volume being pumped while you're pumping can change flow rate. Usually it won't change by much but it will vary. You can check both...even I do, but taken it with a grain of salt. It will vary.

In order for fuel pumps to be certified by weights and measures, they have to be set within .006 gallons and it is technically illegal to have all pumps set to either give to the customer any extra amount or the station owner. They essentially have to average out; some give, some take. But most guys set them right on 0 regardless. This is for Michigan and Ohio at least. Also, pumps will click off at different times based on flow rate of the pump itself. So unless you fill up at the same pump every time, you could be clicking off at slightly different amounts every time. I tend to trust the DIC when it comes to its readout, the DI engines know exactly how much fuel they are putting into the cylinders, so why wouldn't the truck know what MPG it is getting. Besides, every time I fill up, I am usually within .2 mpg what the DIC says and I always chalk it up to be the difference in filling up with different pumps.

Anyone know anyone who supports the 8 speeds trans for tuning yet?