New transmission not working correct - possible PCM issue?

[Trannyman95]

Glad to hear you got it sorted out and everything is working right now

[knightmastery]

Glad to hear you got it sorted out and everything is working right now

Trannyman95... there is one odd behaviour that I am assuming has to do with changing the stock torque converter with a 2800 stall torque converter. When cruising on the highway at 60 miles an hour... at the slightest change in grade (going up hill and I do mean slightest) it seems the transmission slips because the revs will go up about 500 rpm for about a second and then back again, and I can feel the car get weighted back. It will continue to do this untill the grade levels off again. Is this PCM again or something else?

[Trannyman95]

If it is not a stock / OE converter then it likely doesnt have the correct woven carbon lockup clutch lining and isnt holding like it should. Most aftermarket pcm suppliers up the TCC duty cycle to overcome this. It is normal opperation for the rpms to come up a bit and the pcm will catch this and quickly up the duty cycly of the tcc solenoid to drop the slippage to a desired level but if it seems a lot farther off then it did with the stock trans then you will likely need to make some adjustments to the tune.

[Sabrewings]

Stock slippage is about 15-30RPMs at cruising speed, right? (that's how much I see with the stock tune)

[Trannyman95]

The pcm wants to see between 2 and 50 rpm of slippage so your numbers are right in line. Without a graphing scanner or scope it is near impossible to see the real time variations and the averare is normally where it rides in between the two values.

[knightmastery]

If it is not a stock / OE converter then it likely doesnt have the correct woven carbon lockup clutch lining and isnt holding like it should. Most aftermarket pcm suppliers up the TCC duty cycle to overcome this. It is normal opperation for the rpms to come up a bit and the pcm will catch this and quickly up the duty cycly of the tcc solenoid to drop the slippage to a desired level but if it seems a lot farther off then it did with the stock trans then you will likely need to make some adjustments to the tune.

Specifically, what would I adjust in the tune?