I have heard that if you hold down the traction control button, that the C5 goes into "competition mode." Is this true? Is there a notable difference in performance?

Thanks for your help.

 

Yes that is true. Cometitive mode disengages traction control but active handling is still engaged. It's what I drive in all the time. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

It is true. Competition mode is when traction control is off, and active handling is on.

After I put the t1 cam in my car, but before ls1edit. I would notice about 2 tenths slower times on the drag strip with competition mode on vs AH/TC off.

Since I changed the torque limit to 500, I dont see any difference between the two modes in my 1/4 mile times.

Just my observations.

Eric

 

Thanks for the replies.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by red53gmc:
<strong> I have heard that if you hold down the traction control button, that the C5 goes into "competition mode." Is this true? Is there a notable difference in performance?

Thanks for your help. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">T/C=Traction Control
A/H=Active Handling

Red, not sure If I totally understand the question. That button is basically a 3 position switch. When you fire up the car, it defaults to T/C and A/H ON. If you mometarily push the button, both will turn off. If you were to hold it down for about 5 seconds, then it goes into Competitive mode. Which is A/H on and T/C off. This would allow you to spin the wheels as much as you wanted as long as you keep the car in shape. T/C simply modulates throttle and brakes to keep the wheels from spinning. If you were to leave this on during a Drag race, if the wheels spin, then it will cut fuel and timing and maybe even apply brakes to control the spin.....not something that is favorable in this scenario. A/H uses yaw sensors and steering wheel sensors to calculate if the car is going where the driver is intending it to go. If the car gets out of line, it will modulate individual brakes to get the car back in shape. It is a very nice system but still cannot defy the laws of physics. I did an autocross today and went spinning though the infield.....so it does not make you bulletproof and immortal.

In summary.....3 positions:

Normal/Default.......A/H and T/C on
Competitive mode.....Only A/H on
Both off....is both off(annunciated by the amber traction control icon on the instrument cluster and also by the DIC until reset)

The button has absolutely nothing to do with engine power output. I just thought I would state that by the way the question was worded. I hope I didn't insult your intelligence by this long dissertation about something you may already know about. Just thought I would cover the all the bases.

<small>[ March 30, 2003, 01:29 AM: Message edited by: FLYNLO ]</small>

 

Thanks. That explains it best.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by FLYNLO:
<strong>
The button has absolutely nothing to do with engine power output. I just thought I would state that by the way the question was worded. I hope I didn't insult your intelligence by this long dissertation about something you may already know about. Just thought I would cover the all the bases. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">When PCM determines the engine has exceeded the max TM value (350 ft/lbs all M.Y including Z06), it yanks timing out.
There are tables in the PCM that determine how much timing should be reduced which is a direct effect to engine power output.

 

If it modulates the throttle it has everything to do with the power output from the motor

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by vette:
<strong> If it modulates the throttle it has everything to do with the power output from the motor </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Alrighty. I guess y'all missed my point or I didn't make it clearly enough. Probably the ladder. The way his question was worded made it seem that he may think that the little button has some direct magical link to engine performance....like some sport button or soemthing. My point was that it will not enhance or degrade engine performance unless the wheels start to spin or the rear end gets out of line. That is all. Sorry I didn't make that clear the first time around. It will pull timing and/or modulate the throttle if the wheels begin to spin.