Quote:
Originally Posted by b3lha
Maybe that's true. I think that firming up the shifts by recalibration of the line pressure is probably a very good idea and might help to extend the life of the transmission.
But the less torque you apply to the clutches, the less they will slip and the longer they will last. It seems to me that reducing the torque during a shift must a good thing for gearbox longevity. Conversely, disabling the torque-cut signal must surely subject the clutches to more torque, more slip and more wear than leaving it alone.
I accept that the primary goal of the QS device is performance, rather than gearbox longevity. But it's stretching things a bit far to claim that it will definitely make the transmission last longer. Maybe in a few years time, when people have done 80000+ miles with a QC, we'll be able to look at the failure stats and say whether it is better or worse. But right now it's just speculation either way.  |
I do not have any experince with the quick shift product, and I do not personally believe it to be detrimental to any soft transmission parts, but it could be argued that the planetary gears or the lip seals could be damaged by it. I do not believe this is really relevant, because we don't see those kind of failures on these. What's more, what I have had done is surely more trying on those components than any electric mod, and I believe it to be within design limits.
MY OPINION, as a person who has extensive experience with this transmission (but again, absolutely zero with the QC product) is that the torque control signal was put in place to make the thing hold together AND to make it shift better, though I find it odd that it does not occur on the 1-2 shift which is where I think it is needed the most as far as feel goes. Further, I believe that a modification of the valve body to increase base line, apply pressure to the band, high clutch, drain from those areas to compensate for the added flow, and flow thru the cooler circuit could help with the longevity of the transmission, and that such modifications make the QC essentially unnecessary by achieving the same results. I believe a member here has made a product, which, like any modification, lacks the testing that an OEM part would, but that is a product to add to our lineup of impressive feats that we as a community have achieved together in these past 10 years that we have been together on the network. This is to be appreciated, and to be purchased and used by those who choose to use it. From what I have heard, the product does what it is supposed to.
Why, Nifty, did they not do this from the factory, you may ask, stating an excellent opinion that the pump in this trans is too weak, and I would answer "because it killed my fuel economy by an indeterminable amount that is somewhere between .2-.9 MPG.