[StingATX]

I have had my 1LE car for about a year or so and use it for occasional HPDE (drove on COTA last month) – awesome car – best I have ever owned. I've noticed (more so recently) that when turn TC / ST to competitive mode, off, or leave on, that there is considerable wheel spin (regardless of the mode) in second gear. I DO notice a huge difference when I am on a track, coming out of a turn with TC/ST on, that if there is considerable "yaw" or "rotation" while exiting the turn, acceleration is delayed maybe 2 seconds. When I turn TC/TC off (holding button down for 7 seconds) than there is no delay (even in competitive mode) - from my understanding this is stabilitrak and it seems to be working just fine.

However, when I am in 2nd gear, going straight, my wheels slip considerably (even in third gear). When I turn TC off / competitive mode, or back on, the amount of slip seems to be exactly the same – as if my TC is not working – through getting no errors on the dash. I understand this car has a considerable amount of torque, but there should be some difference in wheel spin when I turn TC off and on, correct?

Question: When in second gear with TC on, do you have considerable wheel spin? Does it change when you turn TC off or on? I appreciate the feedback.

I have done research on the differences between TC and ST and how it works and it seems like TC should be stopping most of the wheel spin:

http://www.camaro5.com/forums/showthread.php?t=38885

From the above post:

Traction Control

When drive wheel slip is noted, the EBCM will enter traction control mode.

First, the EBCM requests the engine control module (ECM) to reduce the amount of torque to the drive wheels via a serial data message. The ECM reduces torque to the drive wheels and reports the amount of delivered torque.

If the engine torque reduction does not reduce drive wheel slip, the EBCM will actively apply the brakes on the slipping drive wheel. During traction control braking, hydraulic pressure in each drive wheel circuit is controlled to prevent the drive wheels from slipping. The EBCM commands the pump motor and appropriate solenoid valves ON and OFF to apply brake pressure to the slipping wheel.

Traction control can be manually disabled by pressing the traction control switch.

Stability Control

Stability control provides added stability during aggressive maneuvers. Yaw rate is the rate of rotation about the vehicle's vertical axis. The stability control is activated when the EBCM determines that the desired yaw rate does not match the actual yaw rate as measured by the yaw rate sensor.

The desired yaw rate is calculated by the EBCM using the following inputs:
• Steering wheel position
• Vehicle speed
• Lateral acceleration

The difference between the desired yaw rate and the actual yaw rate is the yaw rate error, which is a measurement of oversteer or understeer. When a yaw rate error is detected, the EBCM attempts to correct the vehicle's yaw motion by applying brake pressure to one or more of the wheels. The amount of brake pressure which is applied varies, depending on the correction required. The engine torque may be reduced also, if it is necessary to slow the vehicle while maintaining stability.

Stability control activations generally occur in turns during aggressive driving. When braking during stability control activation, the brake pedal may pulsate.

Stability control can be manually disabled by pressing the traction control switch for 5 s.