Diablo inTune i2 - I'm a believer!

[chicagofan00]

I've had the Diablo inTune i2 for many months now but was never really too sure how much of a difference it made and always kind of questioned my expenditure on it as I installed the tune on the same day I also installed a K&N intake and always thought to myself how much of the change is due to the intake versus the stock 87 octane tune I installed.

Well, after this weekend I don't question that any more. I was finally due for an oil change this past weekend after installing the tune so I had to revert back to stock just to be on the safe side when bringing it to the dealership. I could notice the difference almost immediately on my way down to the dealership with regards to throttle response and just overall general performance. I kept the tune off all weekend as I thought I was going to be bringing the truck back to the dealership Wednesday morning to have a recall taken care. All weekend long it felt like I was driving a completely different truck.

I ended up having to reschedule my recall work to a couple of weekends away so this morning I just re-installed the 87 octane tune as well as disabled AFM. I didn't disable AFM before so I'm curious to see what kind of a difference it makes this time around with the tune, it sounds like from most on the forums here though that it will drive even better with it off.

I really need to get that custom tune from Diablew as I now have a feeling like I'm missing out from having a custom tune versus using a stock tune.

 

[Yukon John]

I did about the same thing this morning. I had an appointment at 11 AM for the re-program and before I took the Yukon in I restored the original program. Holy Crap...what a difference !!!
As soon as I got home I set it up again as I had it...so now it's back to "NORMAL" LOL !!

I'm glad I pulled it out because my service tech told me the program update wipes all of the old off to install a completely new set up for the airbag sensors.

On a side note...the dealer gave me a new 2017 Acadia V6 AWD to drive around. If you get a chance...drive one....hotter than a "$3 pistol" with the 310 Horse V6 !! Very well balanced and pulls very hard....would make a great commuter vehicle.

 

[chicagofan00]

This brings up a question then with the recall software update. I would assume that while the update will flash over everything, installing the Diablo time shouldn't come anywhere close to touching the part that the recall is addressing, right?

 

[Yukon John]

Correct...

 

[CTLT13]

Big difference on my Tahoe as well (2013 LT), my tires chirp from 1st to 2nd gear now. I gotta K&N CAI, exhaust also. I think it easily gave 25-30 hp or tq.
Were you guys able to take off the speed limiter? My diablo tuner changes everything except that (it's in the menu as it changed it but still tops off around 90mph)

 

[chicagofan00]

The tuner lists it as an option and I have disabled the limiter but I have not actually gone out and tested the fact.

 

[CTLT13]

Did it twice and did not work, thinking maybe something's wrong with the tuner, will e-mail the manufacturer one of these days.
I

 

[Yukon John]

Mine works...137...is all there is.

 

[Tony]

How that that programming unit work exactly? Do you have to leave it plugged and mounted to the car? Or do you just plug it in, change the programming then disconnect it? thanks

 

[Yukon John]

" you just plug it in, change the programming then disconnect it"

 

[Tony]

SWEET. I think I read in a previous post, that it seems to also manage the weird tranny shifting patterns that the suburbans have? I feel it's always going to a higher gear, even when the situation doesn't call for it.. My last denali did not have that issue,, it shifted when it was supposed to,

 

[Yukon John]

Until you decide what you want to do tune wise...simply push the Trailer/Tow button each time you drive it and it will hold the shifts longer.

 

[Tony]

Until you decide what you want to do tune wise...simply push the Trailer/Tow button each time you drive it and it will hold the shifts longer.

Thanks John! So, basically from the way you and a couple of a others are reacting to the performance gains from this unit, it seems to me that it should make the 5.3 "almost" feel like you're driving a 6.2.. ?

 

[Yukon John]

As a matter of fact...my sales rep and I took a '15 Denali 6.2/6 speed and my '16 Yukon SLE w/5.3 Tuned/6 speed and 3:42 gears on a back road recently for a match up. My 5.3 launched every run 2~3 lengths on the 6.2 and held that distance +1 length to 100 each of 4 runs. He drove mine on the last run to see if it made any difference...it didn't.

Haven't done it with an 8 speed yet...should be closer due to the gearing advantage the 8 speed gives.

 

[powerhaulic]

I know my '17 6.2 8spd feels much quicker than my '11 6.2 6spd with tune did.

'11 was geared 3.42 and so is my '17 as it has max tow package

 

[Yukon John]

I know my '17 6.2 8spd feels much quicker than my '11 6.2 6spd with tune did.

'11 was geared 3.42 and so is my '17 as it has max tow package

Yeah...you know I can't figure out how the GMC folks decide that we can buy a 6.2 8 speed Pick Up with 3:42 gears...but we can't buy the same combo in a Yukon. We can buy a 5.3/8 speed Sierra but can't buy that combo in a Tahoe or Yukon.

I guess the "Bean Counters" overrule the Engineers sometimes...LOL.

 

[Weber Dude]

Is the monthly on star diagnostics report affected by the tune or does it show anything different?

 

[Yukon John]

Is the monthly on star diagnostics report affected by the tune or does it show anything different?

It has no effect at all.

 

[Tony]

As a matter of fact...my sales rep and I took a '15 Denali 6.2/6 speed and my '16 Yukon SLE w/5.3 Tuned/6 speed and 3:42 gears on a back road recently for a match up. My 5.3 launched every run 2~3 lengths on the 6.2 and held that distance +1 length to 100 each of 4 runs. He drove mine on the last run to see if it made any difference...it didn't.

Haven't done it with an 8 speed yet...should be closer due to the gearing advantage the 8 speed gives.

It seems that I really need this unit then.. I have NOT been enjoying this 5.3 liter at all, compared the the 14 Denali I just sold.. I mean it's not super slow, but I just loved the pull I felt on the 6.2 and the way the 6.2 shifted gears was flawless compared to this 5.3..i feel like it's lugging the motor half of the time, plus I'm not even getting any better MPG then my 6.2 used to give me..

 

[Ricky1224]

Can someone with the diablo intune i2 share how they set up their tune. What features they changed to optimize performance ? I've never used a tuner before and I mainly wanna clean up that dead spot in the gearing.