Welshys 32ZILA and the 8HP.

[welshy_32ZILA]

I should note too as I have all 4 wheel speed inputs to the emtron I now have the emtron controlling the attessa solenoid for 4wd/traction and launch control strategies. 

[joshuaho96]

5 hours ago, Kinkstaah said:

The ability to have both a 5500 stall for launching, and a regular lockup for every other scenario is pretty sweet. Does it actually work well like that though in the real world? Would it hold up to track use and otherwise you'd never know you had a stall converter in it?

If so, that's awesome

Modern transmissions like the 8HP lock up as low as ~12 km/h. And they will stay locked even with full throttle in gear. Far, far cry from the days of 3/4/5 speed automatics when they only locked up on overdrive gears and even then only if you didn't put too much torque through it. Manual transmissions are pointless unless you personally enjoy shifting gears. 

[Kinkstaah]

Yea my question was really relating to having a big stall converter and it's interaction with that.

Why would BMW not just put a 5500 stall converter in there stock then? Then the OEM car could just launch control hard.

[GTSBoy]

23 minutes ago, Kinkstaah said:

Why would BMW not just put a 5500 stall converter in there stock then?

Because they are annoying and sound like arse with the revs flaring all over the place when they are unlocked.

[welshy_32ZILA]

I feel like the rpm the torque converters are set to also probably match the factory power output and turbo etc. Also considering component wear and longevity for warranty purposes. 

[Kinkstaah]

I feel like this is crazy pills though. Isn't it locked up all the time anyway? It shouldn't flare anywhere if it only unlocks momentarily while it shifts gears.

And if it flares like that when shifting gears, then the 8HP with a 5500 stall is not driving as well when on the road and/or track use..