This topic is to understand every twist and bend to match transmission for different powerband.
so, now as example, my N54 petrol has a fresh built 8hp70/3500 rpm stall turbine and turbolamik as controller
at the beginning due horrible flowing head, ultra small turbos etc true powerband of this N54 is limited to 1400-5500 with
quite linear torque curve and max torque at some 400nm at prox 1800. (this has nothing to do with my engine anymore, just to clarify things)
now situation is that powerband is 5000-8100 with max torque is somewhere on 1100-1200nm ballpark at prox 5400 level and max hp output at prox 1000hp in a league of 7600-7800rpm.
I experienced a erratic transmission slip this morning at in wot on that 5400 rpm on boost level 28psi (target was set at 34psi) in 6th gear (~1000nm) and i`m not sure if that is a component fairlure, tuning fairlure or transmission builder fairlure so i try to figure out some way to be sure i have correct (maxxed out
) settings on TCU line pressures and possible lockup converter pressures to handle this torque levels. question is how to monitor and log those values, what all in TCU bin is involved on that and and is there anything TCU related that can reduce line pressures as limiters?
opened this tcu XDF and there is not too many explanations of all maps to work out with.
slip took over just for a fraction of second but my rpm jumped from 5400 to 7800 on that time and at least on MHD log nothing indicated that trans tryed to do a shift to 7th or anything, just stayed on 6th whole time.
Jan