shift firmness - I installed the Hypertech Max 2.0 on my 2012 Silverado 5.3. Can anyone tell me about the shift firmness? The read out has Stock, 25% 50%, 75% ...

MASA · by **MASA** [OP] » Sep 16 2017, 8:31am

I installed the Hypertech Max 2.0 on my 2012 Silverado 5.3. Can anyone tell me about the shift firmness? The read out has Stock, 25% 50%, 75% and 100%. Which do I need to tow a TT. I set tire size 32", premium gas, Gear 3.42. I'm just looking for the best setup for my truck.

nealinator · by **nealinator** » Sep 16 2017, 4:56pm

I'm not familiar with the Hypertech tuner. Many on this site (myself included) have the Diablosport Intune. I have mine set to firm shifts but have backed off of the shift pressure on the upper hears under wide open throttle. The settings and selections are different between the tuners...so I do not know how that equates to the percentages on the Hypertech. I would start at 25% and increase over time and see how it goes.

What size/weight TT do you have? The 3.42 are not ideal for a very heavy one.

As far as towing with a tune, I would suggest using the T/H button on the shifter and allow the shifts to be controlled by that. The engine tune still stands, but the shifting will be reverted to appropriate for towing. Here is a thread which the resident tuner expert chimed in. Running canned Intune i1000 87 with cat back exhaust

This thread should probably be in the performance tuning section.

Gozzie · by **Gozzie** » Sep 16 2017, 8:26pm

I have the 2.0 and run at 25% but without trailering. 25% didn't change it much and 50% was a little too much unloaded. It only takes a few minutes to change it so you should play with it a little. My thought process is the less it slips the longer the tranny will last but you don't want it to be too uncomfortable either.

MIKE91B · by **MIKE91B** » Sep 16 2017, 8:57pm

The 6l80 shift firmness is correctly calibrated by slightly decreasing commanded shift time, increasing shift pressure, and reducing the methods to reduce delivered engine torque during a shift. So let's talk about this. Decreasing the shift time will reduce the slip in the applying and releasing clutch packs. The next part of eliminating the slip factor is bringing enough pressure to the party so the commanded shift time can actually be met. The next factor is how much torque is pulled during the shift. If ignition timing is pulled and the injectors are cut off the shift will feel soft. Limiting the torque reduction goes hand in hand with shift firmness. It all effects how fast the torque is reapplied to the ground. Does your programmer have a torque management adjustment?

Gozzie · by **Gozzie** » Sep 16 2017, 11:02pm

No unfortunately it does not and there is no explanation of how they actually accomplish the settings.
Great explanation of the workings Mike, Thanks

MIKE91B · by **MIKE91B** » Sep 16 2017, 11:29pm

This is where the handheld tuners become a double edged sword. The end user settings are extremely fool proof and won't allow accidental catastrophic failure but don't let you nail down perfection unless custom calibration capability is a feature. By no means am I saying they are bad. They mitigate risk and cost. Full editing systems come with 0 instructions and cost 2 times as much but in the right hands can resolve just about any issues. Hand held tuners are by far the best way to go when stockish engines and transmissions are in play.

MASA · by **MASA** [OP] » Sep 16 2017, 11:43pm

nealinator wrote:I'm not familiar with the Hypertech tuner. Many on this site (myself included) have the Diablosport Intune. I have mine set to firm shifts but have backed off of the shift pressure on the upper hears under wide open throttle. The settings and selections are different between the tuners...so I do not know how that equates to the percentages on the Hypertech. I would start at 25% and increase over time and see how it goes.

What size/weight TT do you have? The 3.42 are not ideal for a very heavy one.

As far as towing with a tune, I would suggest using the T/H button on the shifter and allow the shifts to be controlled by that. The engine tune still stands, but the shifting will be reverted to appropriate for towing. Here is a thread which the resident tuner expert chimed in. Running canned Intune i1000 87 with cat back exhaust

This thread should probably be in the performance tuning section.

MIKE91B · by **MIKE91B** » Sep 17 2017, 12:27am

The tow haul button changes TCC lock up calibrations and shift points to maximize torque utlization. This still utilizes the same torque reduction methods. The shift time and pressure is still the same in the handheld units from what I have seen and I have seen more than a few canned calibrations from handheld tuners. The tow haul button's settings can be calibrated to implement different strategies for shifting but this info would cost 10x what Lew charges to tune a truck!!!!!

BigBlueLB756 · by **BigBlueLB756** » Sep 17 2017, 1:34am

I set mine also at 25% and am very satisfied with the results. An increase of 2mpg came from somewhere, but I won't attribute it all to the increase in shift firmness.

Here are my chosen settings:

Regular fuel.
Rev limiter +100rpm
Top speed limiter -Stock.
Shift firmness +25%
Shift RPM: 1-2 +100
" " : 2-3 +100
" " : 3-4 +100
" " : 4-5 +100
" " : 5-6 +100
AFM/DOD : OFF

Try 'em.

MASA · by **MASA** [OP] » Sep 17 2017, 2:20am

Thanks for the info. I will try this.

shift firmness - I installed the Hypertech Max 2.0 on my 2012 Silverado 5.3. Can anyone tell me about the shift firmness? The read out has Stock, 25% 50%, 75% ...

Hypertech Max 2.0

Hypertech Max 2.0

Re: Hypertech Max 2.0

Re: Hypertech Max 2.0

Re: Hypertech Max 2.0

Re: Hypertech Max 2.0

Re: Hypertech Max 2.0

Re: Hypertech Max 2.0

Re: Hypertech Max 2.0

Re: Hypertech Max 2.0

Re: Hypertech Max 2.0

Common search terms

Who is online

Gasser Tuning Forum
Are you looking to tune your gas engine? Here you can ask questions and provide your own results on custom tuning your gasser.
Post a new topic To create a new topic in Gasser Tuning, click this button:
Previous topic Next topic