BUILD THREAD 84 Regal back half/caged/mini tubbed lq4/4l80e build

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How does the ECU control line pressure?

 

[Roblq84]

How does the ECU control line pressure?

I’m able to increase it by percentages at different tps ranges per each shift

 

[64nailhead]

I’m able to increase it by percentages at different tps ranges per each shift

Hopefully you have it near maximum by 75% throttle. It’s worth checking with a manual gauge at the transmission. Even if the software is setup correctly, an internal issue that causes low line pressure will burn up every automatic trans.