TCC Only Commanding 238psi 8l90

[Dadee]

I recently installed a triple disk 2500 stall torque converter. I used the blue label M1 fluid per GM's recommendation. This was not an attempt to fix any shuddering issues. Just wanting a bit more oomph off the line.

I cannot get the tcc line pressure more than 238 psi. at 238psi the tcc will slip/shudder under high load. Its very noticeable.

I'm not looking to lock it up under WOT. However I want it to stay locked when commanded.

I have attempted disabling tcc adapt with no luck. It remains the same.

If I use the scanner to command tcc lockup, it will use all 594 psi. It will not slip when using the scanner controls. I would think this would verify that mechanically everything is sound.

Please look over my tune and let me know if I'm missing something. Also feel free to critique it otherwise. I'm currently tuning MAF but want to figure out this tcc slip in the meantime.

Thanks in advance for any help you can provide.

132 MAF.hpt