DIC message
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Instructor
Joined: Jan 2007
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DIC message
Just had upgraded valves/springs, etc, cam and D1sc installed on my 08. After some heavier driving (not excessive, just slightly spirited) and I begin to deccelerate and downshift, I get a DIC message that illuminates for just a few seconds that says something along the lines of "engine control active" (or something like that). Anyway, does anyone else get this message, or am I the only lucky one?
ftf3rd
Joined: Dec 2011
Posts: 179
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From: hobe sound florida
i have an 07 zo6 also got that same message till i figuresd out that computer will cut horse power from engine when you are spinning your tires with the traction control engaged or competive driving engaged, but if you take out of those two and keep the traction control off you will not see that! has to do spinning of the wheels and engine trying to control your car from spinning out! might say built in safety item to keep you going straight? making any sense?
Safety Car
Joined: May 2006
Posts: 4,016
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From: St. Louis, MO
Tech Contributor
When you are downshifting, you might be chirping the back tires. Drag control is intended to apply a little throttle to accelerate the back tires up to the same speed as the fronts to prevent loss of traction and control.
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Instructor
Joined: Jan 2007
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It's definitely not being shifted that aggressively. I also get the message when I rev to appx 4K, clutch to shift into higher gear and it'll show up between shifts.
Melting Slicks
Joined: Mar 2007
Posts: 2,391
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From: Santa Barbara CA
Probably. If you went from a 325/30/19 to a 345/30/19 that's a .59" difference in tire height. So the car now thinks the back tires are rotating more slowly than the fronts. The "drag control" message seems to be a common result of this from what I've seen. My guess is when you downshift the car thinks the slower rear wheel speed is the tires chirping/locking up.
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Thread Starter
Instructor
Joined: Jan 2007
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Probably. If you went from a 325/30/19 to a 345/30/19 that's a .59" difference in tire height. So the car now thinks the back tires are rotating more slowly than the fronts. The "drag control" message seems to be a common result of this from what I've seen. My guess is when you downshift the car thinks the slower rear wheel speed is the tires chirping/locking up.
Safety Car
Joined: Dec 2009
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hmm... I went with a set of drag wheels that had a large 28" rear tire, and for one day only I had 'engine drag'/service abs/service active handling/ect. I put my regular wheels/tires back on and it went away, then put the drag wheels back on and it never came back again.
I wouldn't think you were anywhere near the max % difference between front/rear with just that rear tire change. It also sounds like it's slightly different than my issue that tripped all kinds of other warnings.
I wouldn't think you were anywhere near the max % difference between front/rear with just that rear tire change. It also sounds like it's slightly different than my issue that tripped all kinds of other warnings.