2014+ Engine & Transmission Tuning

[TJay74]

HPT has plenty of support for the 8L80E, the only thing they are missing as of now is the main pressure tables. They are still working on breaking the coding to that from what Bill said over there.

 

I went in and revised the shift times, reduced the downshift times by 50% and the upshift times by 45%. Shifts are very quick and firm still. May try to see how turn the shift torque management off on the up/down shifts feels, but as of now it shifts great to me.

[Badass69]

In comparison to the 6 speed... no they aren't even close with the 8L90E... Give it a year or 6 lol..

 

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[RDKILL]

WOW!

There's so much good info here!

I have contacted Jarrad and Justin at BB and looking forward to them coming to Austin for an in person tune...I just need to wait until Nov.

They have been very responsive to my questions, which tells me they are on it when it comes to customer service...and that means a lot and a deciding factor in many things.

 

Coming from driving a 1990 Silverado 350, to my 2016 Silverado 5.3, I'm a little disappointed at how this 2016 drives.

I just can't stand the V4 stuff, so I just keep my tranny in 5th...when I want to save gas, I drive my wife's Prius..LOL!

 

I'm glad I came across this forum and specifically this thread as I've learned a lot about my truck...like how I shouldn't be using 87 oct.

 

Well, I don't have much to add to this thread YET, but Thanks again for all the info!

 

Aloha Y'all!

Woody

Edited September 4, 2016 by RDKILL

[No Tyme]

I'm glad I came across this forum and specifically this thread as I've learned a lot about my truck...like how I should be using 87 oct.

Why is it that you should be using 87? I run 89 octane in my 5.3. This engine stock has 10 to 1 compression and believe it runs better with 89 and my 87 tune.

[RDKILL]

Why is it that you should be using 87? I run 89 octane in my 5.3. This engine stock has 10 to 1 compression and believe it runs better with 89 and my 87 tune.

Haha...it should be "shouldn't" and not "should"...Fixed

 

As Jennabear has mentioned and explained, I now see why I need to use 89+ as she mentioned due to the high compression.

 

So your truck is tuned to 87oct?

Edited September 4, 2016 by RDKILL

[No Tyme]

So your truck is tuned to 87oct?

I believe so yes. I received two tunes from BB, one for 89/87 octane and another for 91+ octane. I use the 89/87 tune with 89 octane and have had no issues. After I first installed my tune I had 87 octane and thought I would try the 89 and I believe I seen an improvement in my engine, as it seemed to run smoother.

I still have a momentary flop or "dead spot" from first to second but I did not get the advanced tuner so every-time I need an adjustment I need to go to BB. I would like to try and advance the timing a tic or two to see if that "dead spot" could get resolved. It is mainly under normal acceleration and not a full pedal shift. It does seem slightly better in manual mode but there is a noticeable difference between 2/3 shift compared to 3/4 shifts.

I am NOT a fan of the 6 speed and to me it is the only major downfall of the truck, second is no upgrade to the MyLink system, but that is miinor.

If I could get this trans to shift like my 4L60E which is in my 96 Corvette I would simply be delighted.

[DPetry94]

Has anyone who uses a Diablo tuner been to the dealer since installing a tune? They say it can't be seen, but I'm curious to hear from people on here.

I've had my tube for a while, but recently I've had a weird noise that I can't track down.

Edited September 6, 2016 by DPetry94

[Jeffjr464]

The guys were just in Orlando. But if there is enough interest, they will go anywhere.

Canada please!!

[RDKILL]

Anyone in the Austin area....they'll be here in November, check their website for other areas near you.

[LVZ71]

I believe so yes. I received two tunes from BB, one for 89/87 octane and another for 91+ octane. I use the 89/87 tune with 89 octane and have had no issues. After I first installed my tune I had 87 octane and thought I would try the 89 and I believe I seen an improvement in my engine, as it seemed to run smoother.

I still have a momentary flop or "dead spot" from first to second but I did not get the advanced tuner so every-time I need an adjustment I need to go to BB. I would like to try and advance the timing a tic or two to see if that "dead spot" could get resolved. It is mainly under normal acceleration and not a full pedal shift. It does seem slightly better in manual mode but there is a noticeable difference between 2/3 shift compared to 3/4 shifts.

I am NOT a fan of the 6 speed and to me it is the only major downfall of the truck, second is no upgrade to the MyLink system, but that is miinor.

If I could get this trans to shift like my 4L60E which is in my 96 Corvette I would simply be delighted.

Did you Flash the transmission tune file along with the 89/87 file from BB?? I originally only loaded the 91+ file and my truck was not shifting very well. Once I realized I needed to Flash the Mod TCM file along with the ECM file all was perfect. My truck has more HP and shifts so much better.

[NWarrenZ71]

The guys were just in Orlando. But if there is enough interest, they will go anywhere.

St. Louis would be great. Seems like all the nearest in person tuning locations are 5-6 hours away.

 

 

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[Jennabear]

St. Louis would be great. Seems like all the nearest in person tuning locations are 5-6 hours away.

 

 

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You can always email the guys to get on the interest list for St. Louis. Locations are determined based on interest.

 

Sent from my fone.

[foo.c]

I had the recall done today and I am pretty sure I lost my tune. The throttle feels much less sensitive was the first clue.

 

Can I re-flash using my Autocal, or does that negate the point of having the recall done in the first place? Is there an update tune that incorporates the recall?

[foo.c]

Looking at my invoice it says:

 

Recall 16007 Sensing and Diagnostic Module reprogramming.

 

It seems to me like it would safe to reload my ECM and TCM tune. Right?

[14gmcsierra]

Hey guys just wanted to see if anybody else had this problem i have a 14 sierra 5.3 it's tuned by blackbear I really like the work Justin did so I recommend him. The truck only has 10k and it came up with a couple of codes this morning P2635 and P018B I want to take it into the dealer to see if they can check it out what are the chance they see the tune I flashed it back to stock and the codes went away but I'm sure they will come back up when the truck gets cold again what would y'all recommend?