Stabilitrack/TC at drag strip

meSSohappy · 07-13-2019, 05:41 PM

SO....im having issues with soft launces at the drag strip. Everything off...double tap...hold for 7-10 sec...tried all modes....still consistent 1.7 at 60'. I can see in my tune that car is pulling timing as soon as I full throttle. I have a ton of tq on race fuel, 763ftlbs, and my tuner thinks the car is seeing this and adjusting the timing because everything is off??? Suggested I pull the fuses to eliminate this possibility. Anyone else run into this? Anyone pulling their Stab/TC fuses for drag racing? Do they need to be pulled and reinstalled in a certain order? Which fuses are they?

Thanks in advance....getting frustrated.

wnta1ss · 07-15-2019, 04:10 AM

Has your TCM been tuned?

As far as fuses, in my SS model, the Stabilitrack seems to depend on the ABS fuses, F1 and F22. The power steering does not work and the dash lights up with warnings when these fuses are removed.

Gunkk · 07-15-2019, 05:22 AM

Sounds like Torque Management is intruding on your fun.

2018ZL1 · 07-15-2019, 11:22 AM

Quote:

Originally Posted by meSSohappy

SO....im having issues with soft launces at the drag strip. Everything off...double tap...hold for 7-10 sec...tried all modes....still consistent 1.7 at 60'. I can see in my tune that car is pulling timing as soon as I full throttle. I have a ton of tq on race fuel, 763ftlbs, and my tuner thinks the car is seeing this and adjusting the timing because everything is off??? Suggested I pull the fuses to eliminate this possibility. Anyone else run into this? Anyone pulling their Stab/TC fuses for drag racing? Do they need to be pulled and reinstalled in a certain order? Which fuses are they?

Thanks in advance....getting frustrated.

What kind of tires are you running? With that kind of power you should be way into the 1.4x's!!! I am not sure if the torque management is disabled thru the engine tune or the TCM tune... I had my TCM sent out to be unlocked and JRE did all my tuning... consistent 1.42's 60 foot. I am running about 40% ethanol... Similar build besides the ported blower and larger TB

meSSohappy · 07-16-2019, 09:03 AM

Quote:

Originally Posted by 2018ZL1

What kind of tires are you running? With that kind of power you should be way into the 1.4x's!!! I am not sure if the torque management is disabled thru the engine tune or the TCM tune... I had my TCM sent out to be unlocked and JRE did all my tuning... consistent 1.42's 60 foot. I am running about 40% ethanol... Similar build besides the ported blower and larger TB

Running MT ETs DRs with 15 lbs and stock front with 42 lbs. TCM has not been unlocked. Best time 10.69 @ 131 mph w/1.71 60’. My dealer said if I tune the TCM all warranty on the transmission and rear end is void. Trying to avoid that. But if it’s the problem with my 60’ then bye bye warranty. If I look at all my data logs, I have the exact same timing curve at launch. It drops right off at the start. Only lasts for milliseconds but it’s enough to soft launch the car.

meSSohappy · 07-16-2019, 09:08 AM

It was mentioned in another group on FB that this box highlighted in red should be turned to enabled. Mine is currently disabled. Have my tuner looking into it. It is done through ECM tune, not TCM, so that’s good. Thoughts?

2018ZL1 · 07-16-2019, 09:34 AM

Quote:

Originally Posted by meSSohappy

It was mentioned in another group on FB that this box highlighted in red should be turned to enabled. Mine is currently disabled. Have my tuner looking into it. It is done through ECM tune, not TCM, so that’s good. Thoughts?

Mine is set to enable...

meSSohappy · 07-16-2019, 10:06 AM

Quote:

Originally Posted by 2018ZL1

Mine is set to enable...

Ok. Cool. I will change mine and see what happens.

2018ZL1 · 07-16-2019, 10:25 AM

Quote:

Originally Posted by meSSohappy

Ok. Cool. I will change mine and see what happens.

If thats what the issues was you are in for a BIG surprise!!

meSSohappy · 07-16-2019, 06:49 PM

Quote:

Originally Posted by 2018ZL1

If thats what the issues was you are in for a BIG surprise!!

I sure hope so....sub 10.5 would be nice !!!

meSSohappy · 07-16-2019, 07:03 PM

For you guys that have the HP Tuner set up as pictured above, are the other values in the pic the same settings as your personal tunes? Just wondering if I ENABLE IT of other values are affected.

wnta1ss · 07-18-2019, 04:03 AM

Quote:

Originally Posted by meSSohappy

TCM has not been unlocked.

I think that is probably a big contributor to your car's launch problem. TCM tuning might be needed to fix your problem, sounds like there's too much torque management going on.

meSSohappy · 07-22-2019, 02:57 PM

I didn’t make a difference at all. Looks like I will need to unlock my tranny to get rid of all torque management.

2018ZL1 · 07-22-2019, 03:23 PM

Quote:

Originally Posted by meSSohappy

I didn’t make a difference at all. Looks like I will need to unlock my tranny to get rid of all torque management.

That wouldn't surprise me one bit! I would have thought the power train warranty would have been blown to pieces with the mods you have done so far! Adding all that extra HP if that locked tranny fails I have a sneaky suspicion they wont be covering it! I can tell you its a PITA to remove it!! lol the entire front end of the car has to come off... just a couple screws!

07-13-2019, 05:41 PM	#1
meSSohappy Drives: 2018 ZL1 A10 Join Date: May 2012 Location: British Columbia, Canada Posts: 1,372	Stabilitrack/TC at drag strip SO....im having issues with soft launces at the drag strip. Everything off...double tap...hold for 7-10 sec...tried all modes....still consistent 1.7 at 60'. I can see in my tune that car is pulling timing as soon as I full throttle. I have a ton of tq on race fuel, 763ftlbs, and my tuner thinks the car is seeing this and adjusting the timing because everything is off??? Suggested I pull the fuses to eliminate this possibility. Anyone else run into this? Anyone pulling their Stab/TC fuses for drag racing? Do they need to be pulled and reinstalled in a certain order? Which fuses are they? Thanks in advance....getting frustrated. __________________ DAVENPORT STAGE 2 PLUS - 2" ARH ceramic coated headers - 3" ARH catless exhaust - Stock NPP mufflers - Kong ported SC - Katech 103 ported TB - Rotofab 5" Big gulp CAI - 22.5% lower pulley - ATI Harmonic balancer - Cordes SC expansion tank - MSD hi temp ignition wires - Koolsox spark plug insulators - custom tunes - 660hp/725tq pump - 713hp/763tq race

07-16-2019, 09:08 AM	#6
meSSohappy Drives: 2018 ZL1 A10 Join Date: May 2012 Location: British Columbia, Canada Posts: 1,372	It was mentioned in another group on FB that this box highlighted in red should be turned to enabled. Mine is currently disabled. Have my tuner looking into it. It is done through ECM tune, not TCM, so that’s good. Thoughts? Attached Images __________________ DAVENPORT STAGE 2 PLUS - 2" ARH ceramic coated headers - 3" ARH catless exhaust - Stock NPP mufflers - Kong ported SC - Katech 103 ported TB - Rotofab 5" Big gulp CAI - 22.5% lower pulley - ATI Harmonic balancer - Cordes SC expansion tank - MSD hi temp ignition wires - Koolsox spark plug insulators - custom tunes - 660hp/725tq pump - 713hp/763tq race

07-16-2019, 07:03 PM	#11
meSSohappy Drives: 2018 ZL1 A10 Join Date: May 2012 Location: British Columbia, Canada Posts: 1,372	For you guys that have the HP Tuner set up as pictured above, are the other values in the pic the same settings as your personal tunes? Just wondering if I ENABLE IT of other values are affected. __________________ DAVENPORT STAGE 2 PLUS - 2" ARH ceramic coated headers - 3" ARH catless exhaust - Stock NPP mufflers - Kong ported SC - Katech 103 ported TB - Rotofab 5" Big gulp CAI - 22.5% lower pulley - ATI Harmonic balancer - Cordes SC expansion tank - MSD hi temp ignition wires - Koolsox spark plug insulators - custom tunes - 660hp/725tq pump - 713hp/763tq race

07-22-2019, 02:57 PM	#13
meSSohappy Drives: 2018 ZL1 A10 Join Date: May 2012 Location: British Columbia, Canada Posts: 1,372	I didn’t make a difference at all. Looks like I will need to unlock my tranny to get rid of all torque management. __________________ DAVENPORT STAGE 2 PLUS - 2" ARH ceramic coated headers - 3" ARH catless exhaust - Stock NPP mufflers - Kong ported SC - Katech 103 ported TB - Rotofab 5" Big gulp CAI - 22.5% lower pulley - ATI Harmonic balancer - Cordes SC expansion tank - MSD hi temp ignition wires - Koolsox spark plug insulators - custom tunes - 660hp/725tq pump - 713hp/763tq race

07-15-2019, 04:10 AM	#2
wnta1ss Drives: 2017 Camaro 1SS Join Date: Aug 2016 Location: NH Posts: 1,692	Has your TCM been tuned? As far as fuses, in my SS model, the Stabilitrack seems to depend on the ABS fuses, F1 and F22. The power steering does not work and the dash lights up with warnings when these fuses are removed.

07-15-2019, 05:22 AM	#3
Gunkk Thank you Al Oppenheiser! Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017 Location: Sarasota, FL Posts: 4,973 View My Garage	Sounds like Torque Management is intruding on your fun.

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