Injector scaling

I have 30% over injectors to install in a 2006 C4500. e35a ecm and is a torque based fueling strategy. Max mm3 on the table is 120. I know i need to scale the pulse width table to what i have a known data for the injector flow per kpa. Then change timing to keep it centered. What is the work around to when you want more torque then what is allowed to be requested so the trans line pressure stays happy?

Jim,

If I understand your question correctly, you're looking for a way to signal the trans an accurate torque number for as long as possible so as to maintain appropriate line pressure and shift firmness. This is an admirable strategy.

Of course there's a limit here to how of a torque # your ECM will report and also how high the trans is able to translate from. For instance, your ECM may report 1200 ft/lbs but the TCM may see no difference in pressure or shift timing on any torque value over 850 ft/lbs. Just something to keep in mind.

The first thing I would suggest doing after adjusting the pulsewidth table is raising all of your torque values and limits as high as you makes sense to get an accurate log of the max reportable ECM and TCM torque. Once you know this torque number you can select a fuel rate to reasonably match and build your safe tune, or go on a hunt for any remaining torque limits.

Unfortunately there's no electronic way to trick the trans into thinking there's more torque than reported on the data bus. On that vintage 6 speed you'll be mechanically limited to ~250psi line pressure without any internal mods to the pump relief spring.

Hope this gets you moving the right direction,

Nick