[Jackpine]

Originally Posted by jdjam

WOT setings

1-2 5200rpm
2-3 5200rpm
3-4 5000rpm

I don't know that this will help your "hard" downshift from 4th to 2nd when passing, but I think your WOT shifts are all too high. Torque and HP are generally decreasing above 5000, so I'd recommend 1-2 and 2-3 at 5100 and drop the 3-4 shift down to 4600. Bill said once that the 3-4 shift is stressful on the transmission and he seems to prefer it down there.

Set the rev limit at 5500, because you start to get Torque Converter ballooning at 5400. However, the rev limit needs to be at least 400 above the highest WOT shift.

Finally, load your custom tunes without reloading any of your "previous settings" and check the WOT shifts and rev limit. I'd tend to stay pretty loose to what Bill put these at and my guess is, they will be quite close to the figures I just gave you.

I honestly don't know if the sudden downshift from 4th to 2nd is bad or good, but as 88racing said, the transmission is just doing what you're telling it to. My gut tells me the "lurch" is putting stress on things, so I tend to feed the gas in just a bit slower, giving me a transitional 4-3 downshift and then a 3-2 downshift (if the load and speed are right). I'm happy to have someone explain to me why this is not necessary if they feel this is the case.

- Jack