4-5 Shift?

LaVa121 · 09-27-2020, 05:12 PM

I was at the track last weekend with the car and I have a 3200 FTI converter. On the 4-5 shift, it sounds like the rmps are all over the place right before the traps. I've heard others have had issues with a 4-5 shift with aftermarket converters. Is this true? Going to get a log the next time I'm out to send to my tuner.

*Joshinator99* · 09-27-2020, 07:09 PM

Have you tuned the TCM? Adjustments in line pressure can be done based on TCC slippage vs commanded. The pressure gets ramped up harder the more slippage from commanded occurs.

LaVa121 · 09-27-2020, 07:28 PM

Quote:

Originally Posted by Joshinator99

Have you tuned the TCM? Adjustments in line pressure can be done based on TCC slippage vs commanded. The pressure gets ramped up harder the more slippage from commanded occurs.

Yes, I've had the TCM tuned. car launches great and every shift after is great. It's the 4-5 the converter feels all over the place.

*Joshinator99* · 09-27-2020, 09:32 PM

Quote:

Originally Posted by LaVa121

Yes, I've had the TCM tuned. car launches great and every shift after is great. It's the 4-5 the converter feels all over the place.

I’m assuming your tuner will want you to datalog it and send it to him. Feel free to post it up here too and we can check it out.

*Joshinator99* · 10-04-2020, 06:52 PM

Just wondering how you made out on this?

09-27-2020, 05:12 PM	#1
LaVa121 OnThreeSS Drives: 2016 Camaro 2SS Join Date: Nov 2016 Location: PA Posts: 2 View My Garage	4-5 Shift? I was at the track last weekend with the car and I have a 3200 FTI converter. On the 4-5 shift, it sounds like the rmps are all over the place right before the traps. I've heard others have had issues with a 4-5 shift with aftermarket converters. Is this true? Going to get a log the next time I'm out to send to my tuner.

09-27-2020, 07:09 PM	#2
Joshinator99 Moderator Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018 Location: New Ipswich NH Posts: 6,338	Have you tuned the TCM? Adjustments in line pressure can be done based on TCC slippage vs commanded. The pressure gets ramped up harder the more slippage from commanded occurs. __________________ 2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, ATI 8L90, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors & BB HPFP, TooHighPSI/Katech port injection, 15” conversion 1066 WHP STD/1027 SAE, 9.10@152.5 (new times coming)

10-04-2020, 06:52 PM	#5
Joshinator99 Moderator Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018 Location: New Ipswich NH Posts: 6,338	Just wondering how you made out on this? __________________ 2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, ATI 8L90, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors & BB HPFP, TooHighPSI/Katech port injection, 15” conversion 1066 WHP STD/1027 SAE, 9.10@152.5 (new times coming)

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