Different shifts

[Kenny D]

Can someone please explain the difference in stock/firm/hard shift options? What improvements does changing them have other than perceived feel?

[06MonteSS]

firm shift has firmer shift pressure than stock.. hard shift has harder shift pressure/firmness than stock or the firm shit tunes.

[Kenny D]

So really no benefit other than the feel of a firm shift and the old school 2nd gear chirp?

[Jacobc1983]

What would be the best way to keep the same (stock) feel of the transmission (with nice shifts that I can't feel) but still tune the transmission to not lug the engine? Is the shifting tune of the transmission held in the ECM or TCM of the tune?

[Jacobc1983]

What would be the best way to tune the transmission of my 2016 GMC Sierra with 6 speed without including the firm or hard shift? I feel the firm shift is too rough, but would like to clean up its downshifting manners.

[mikel]

TCM controls the transmission. The firm shift adds minimal pressure, what is it you feel is not good with that tune?

[Jacobc1983]

I can feel the increase in the shift pressure as compared to stock and I don't like the feel of it. How would I tune the transmission while keeping the stock shift pressure?

[06MonteSS]

the only thing changed in the preset tunes are shift pressure.. so if you don't want the shift pressure, than just select the Modify Stock tcm tune, that's just a copy of the stock tcm tune that you can make your own adjustments too...

[Jacobc1983]

So the actual shift points are changed in the ecm and not the tcm part of the tune? So when I load the 87 octane tune the shifting times (based off throttle and speed/rpm etc.)are changed? I guess I just want to know how each of them work.

[06MonteSS]

the preset canned tunes do not change shift points at all

[Jacobc1983]

Do you do transmission tuning which would help with driveability?

[06MonteSS]

Do you do transmission tuning which would help with driveability?

yes I do.. you can email me with your vehicle year, model, engine, any mods, etc at: diablo DOT help AT gmail DOT com and I can email you info about the custom tuning, the process, cost, etc..