Less Shift Firmness After Higher Stall TC Install

[TheDarkPath]

Hey everyone, I searched and couldn't find anything specific to this question. Is it normal to have a noticeable difference in shift firmness after installing a higher stall torque converter? I got a dyno tune from a shop with all my mods except the TC and then they re-tuned the transmission after the TC. I had a MUCH firmer shift before the dyno tune/TC. I was told that some loss in shift firmness is expected as the higher stall TC would lead to less RPM loss between shifts. I didn't note where the RPMs fell to between shifts before the TC so I can't confirm if that's happening.

Went from stock torque converter to Circle D multi-disc 3600 stall TC (they said it'd be between 3600 and 3800). I can hold a power brake to about 3100-3200 RPM before the suspension starts to creak and it starts feeling like it's going to push me forward.

Is this normal for a higher stall or is this something in the transmission tune?

 

[JeremyH]

As far as I know it can be adjusted in the tune how soft or firm it shifts.

 

[Noclutch]

Need to know what the tuner used to tune your car. I have the sct x3 I can change the firmness and did after TC install.

 

[TheDarkPath]

Need to know what the tuner used to tune your car. I have the sct x3 I can change the firmness and did after TC install.

They used my SCT xcal2. I checked and all tune parameters are locked out.

 

[CPRsm]

Hey everyone, I searched and couldn't find anything specific to this question. Is it normal to have a noticeable difference in shift firmness after installing a higher stall torque converter? I got a dyno tune from a shop with all my mods except the TC and then they re-tuned the transmission after the TC. I had a MUCH firmer shift before the dyno tune/TC. I was told that some loss in shift firmness is expected as the higher stall TC would lead to less RPM loss between shifts. I didn't note where the RPMs fell to between shifts before the TC so I can't confirm if that's happening.

Went from stock torque converter to Circle D multi-disc 3600 stall TC (they said it'd be between 3600 and 3800). I can hold a power brake to about 3100-3200 RPM before the suspension starts to creak and it starts feeling like it's going to push me forward.

Is this normal for a higher stall or is this something in the transmission tune?

All 100% normal. If the converter isn't locked and it slips more than the old one, it will still be slipping more when the shift comes.(I'm assuming you mean cruising around.) WOT should still be pretty firm since it's up in rpm and should be fully coupled by the time you shift @ 5k+

 

[TheDarkPath]

All 100% normal. If the converter isn't locked and it slips more than the old one, it will still be slipping more when the shift comes.(I'm assuming you mean cruising around.) WOT should still be pretty firm since it's up in rpm and should be fully coupled by the time you shift @ 5k+

Thank you! That's what I needed to know. Shifts driving around town are much softer. Shifts feel a bit softer at WOT too but are still decently firm so it sounds like nothing to worry about.